diff --git a/tools/under-control/src/RELEASE b/tools/under-control/src/RELEASE
index 0a6f567da..6824c6c26 100644
--- a/tools/under-control/src/RELEASE
+++ b/tools/under-control/src/RELEASE
@@ -1 +1 @@
-126.0.6478.186
+127.0.6533.57
diff --git a/tools/under-control/src/android_webview/browser/aw_content_browser_client.cc b/tools/under-control/src/android_webview/browser/aw_content_browser_client.cc
index c21b13946..56a6a9dde 100755
--- a/tools/under-control/src/android_webview/browser/aw_content_browser_client.cc
+++ b/tools/under-control/src/android_webview/browser/aw_content_browser_client.cc
@@ -62,6 +62,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/task/sequenced_task_runner.h"
 #include "base/task/thread_pool/thread_pool_instance.h"
+#include "base/trace_event/base_tracing.h"
 #include "build/build_config.h"
 #include "components/crash/content/browser/crash_handler_host_linux.h"
 #include "components/embedder_support/origin_trials/origin_trials_settings_storage.h"
@@ -137,7 +138,6 @@ using AttributionReportingOsRegistrar =
 
 namespace android_webview {
 namespace {
-static bool g_should_create_thread_pool = true;
 #if DCHECK_IS_ON()
 // A boolean value to determine if the NetworkContext has been created yet. This
 // exists only to check correctness: g_check_cleartext_permitted may only be set
@@ -517,7 +517,8 @@ base::FilePath AwContentBrowserClient::GetDefaultDownloadDirectory() {
 }
 
 std::string AwContentBrowserClient::GetDefaultDownloadName() {
-  NOTREACHED() << "Android WebView does not use chromium downloads";
+  NOTREACHED_IN_MIGRATION()
+      << "Android WebView does not use chromium downloads";
   return std::string();
 }
 
@@ -534,7 +535,7 @@ AwContentBrowserClient::GetLocalTracesDirectory() {
 
 void AwContentBrowserClient::DidCreatePpapiPlugin(
     content::BrowserPpapiHost* browser_host) {
-  NOTREACHED() << "Android WebView does not support plugins";
+  NOTREACHED_IN_MIGRATION() << "Android WebView does not support plugins";
 }
 
 bool AwContentBrowserClient::AllowPepperSocketAPI(
@@ -542,14 +543,14 @@ bool AwContentBrowserClient::AllowPepperSocketAPI(
     const GURL& url,
     bool private_api,
     const content::SocketPermissionRequest* params) {
-  NOTREACHED() << "Android WebView does not support plugins";
+  NOTREACHED_IN_MIGRATION() << "Android WebView does not support plugins";
   return false;
 }
 
 bool AwContentBrowserClient::IsPepperVpnProviderAPIAllowed(
     content::BrowserContext* browser_context,
     const GURL& url) {
-  NOTREACHED() << "Android WebView does not support plugins";
+  NOTREACHED_IN_MIGRATION() << "Android WebView does not support plugins";
   return false;
 }
 
@@ -696,9 +697,8 @@ AwContentBrowserClient::CreateURLLoaderThrottles(
         static_cast<ui::PageTransition>(request.transition_type),
         ui::PAGE_TRANSITION_RELOAD);
     if (is_load_url || is_go_back_forward || is_reload) {
-      result.push_back(
-          std::make_unique<AwURLLoaderThrottle>(static_cast<AwBrowserContext*>(
-              browser_context)));
+      result.push_back(std::make_unique<AwURLLoaderThrottle>(
+          static_cast<AwBrowserContext*>(browser_context)));
     }
   }
 
@@ -841,14 +841,6 @@ bool AwContentBrowserClient::ShouldOverrideUrlLoading(
       request_headers, ignore_navigation);
 }
 
-bool AwContentBrowserClient::CreateThreadPool(std::string_view name) {
-  if (g_should_create_thread_pool) {
-    base::ThreadPoolInstance::Create(name);
-    return true;
-  }
-  return false;
-}
-
 std::unique_ptr<content::LoginDelegate>
 AwContentBrowserClient::CreateLoginDelegate(
     const net::AuthChallengeInfo& auth_info,
@@ -1004,9 +996,9 @@ bool AwContentBrowserClient::ShouldLockProcessToSite(
 }
 
 bool AwContentBrowserClient::ShouldEnforceNewCanCommitUrlChecks() {
-  // TODO(https://crbug.com/326250356): Diagnose and fix Android WebView crashes
-  // from these new checks and then remove this function.
-  return false;
+  // TODO(https://crbug.com/326250356): Diagnose any remaining Android WebView
+  // crashes from these new checks and then remove this function.
+  return true;
 }
 
 void AwContentBrowserClient::WillCreateURLLoaderFactory(
@@ -1025,6 +1017,8 @@ void AwContentBrowserClient::WillCreateURLLoaderFactory(
     bool* disable_secure_dns,
     network::mojom::URLLoaderFactoryOverridePtr* factory_override,
     scoped_refptr<base::SequencedTaskRunner> navigation_response_task_runner) {
+  TRACE_EVENT0("android_webview",
+               "AwContentBrowserClient::WillCreateURLLoaderFactory");
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   mojo::PendingReceiver<network::mojom::URLLoaderFactory> proxied_receiver;
@@ -1113,9 +1107,12 @@ uint32_t AwContentBrowserClient::GetWebSocketOptions(
   content::WebContents* web_contents =
       content::WebContents::FromRenderFrameHost(frame);
   AwContents* aw_contents = AwContents::FromWebContents(web_contents);
+  AwBrowserContext* aw_context =
+      AwBrowserContext::FromWebContents(web_contents);
 
-  bool global_cookie_policy =
-      AwCookieAccessPolicy::GetInstance()->GetShouldAcceptCookies();
+  bool global_cookie_policy = aw_context->GetCookieManager()
+                                  ->cookie_access_policy()
+                                  ->GetShouldAcceptCookies();
   bool third_party_cookie_policy = aw_contents->AllowThirdPartyCookies();
   if (!global_cookie_policy) {
     options |= network::mojom::kWebSocketOptionBlockAllCookies;
@@ -1141,9 +1138,14 @@ bool AwContentBrowserClient::WillCreateRestrictedCookieManager(
       target_rcm_remote;
   *receiver = target_rcm_remote.InitWithNewPipeAndPassReceiver();
 
+  AwBrowserContext* aw_context =
+      static_cast<AwBrowserContext*>(browser_context);
+  AwCookieAccessPolicy* aw_cookie_access_policy =
+      aw_context->GetCookieManager()->cookie_access_policy();
+
   AwProxyingRestrictedCookieManager::CreateAndBind(
       std::move(target_rcm_remote), is_service_worker, process_id, routing_id,
-      std::move(orig_receiver));
+      std::move(orig_receiver), aw_cookie_access_policy);
 
   return false;  // only made a proxy, still need the actual impl to be made.
 }
@@ -1233,11 +1235,6 @@ void AwContentBrowserClient::OnDisplayInsecureContent(
   }
 }
 
-// static
-void AwContentBrowserClient::DisableCreatingThreadPool() {
-  g_should_create_thread_pool = false;
-}
-
 blink::mojom::OriginTrialsSettingsPtr
 AwContentBrowserClient::GetOriginTrialsSettings() {
   return AwBrowserProcess::GetInstance()
@@ -1267,6 +1264,8 @@ bool AwContentBrowserClient::IsAttributionReportingOperationAllowed(
     const url::Origin* destination_origin,
     const url::Origin* reporting_origin,
     bool* can_bypass) {
+  AwBrowserContext* aw_context =
+      static_cast<AwBrowserContext*>(browser_context);
   // WebView only supports OS-level attribution and not web-attribution.
   // Note: We do not check here if attribution reporting has been disabled
   // for the associated WebView as this is checked at the start of processing
@@ -1285,10 +1284,14 @@ bool AwContentBrowserClient::IsAttributionReportingOperationAllowed(
     case AttributionReportingOperation::kReport:
     case AttributionReportingOperation::kSourceTransitionalDebugReporting:
     case AttributionReportingOperation::kTriggerTransitionalDebugReporting:
+    case AttributionReportingOperation::kSourceAggregatableDebugReport:
+    case AttributionReportingOperation::kTriggerAggregatableDebugReport:
       return false;
     case AttributionReportingOperation::kOsSourceTransitionalDebugReporting:
     case AttributionReportingOperation::kOsTriggerTransitionalDebugReporting: {
-      if (!AwCookieAccessPolicy::GetInstance()->GetShouldAcceptCookies()) {
+      if (!aw_context->GetCookieManager()
+               ->cookie_access_policy()
+               ->GetShouldAcceptCookies()) {
         return false;
       }
 
@@ -1366,4 +1369,20 @@ bool AwContentBrowserClient::WillProvidePublicFirstPartySets() {
       switches::kWebViewFpsComponent);
 }
 
+bool AwContentBrowserClient::IsFullCookieAccessAllowed(
+    content::BrowserContext* browser_context,
+    content::WebContents* web_contents,
+    const GURL& url,
+    const blink::StorageKey& storage_key) {
+  if (!web_contents) {
+    // We do not allow third-party cookie access from service workers.
+    return false;
+  }
+  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
+  if (!aw_settings) {
+    return false;
+  }
+
+  return aw_settings->GetAllowThirdPartyCookies();
+}
 }  // namespace android_webview
diff --git a/tools/under-control/src/chrome/android/java/AndroidManifest.xml b/tools/under-control/src/chrome/android/java/AndroidManifest.xml
index f9192285f..ef22b3c2b 100755
--- a/tools/under-control/src/chrome/android/java/AndroidManifest.xml
+++ b/tools/under-control/src/chrome/android/java/AndroidManifest.xml
@@ -558,12 +558,6 @@ by a child template that "extends" this file.
             {{ self.supports_vr() }}
             {{ self.extra_web_rendering_activity_definitions() }}
         </activity>
-        <activity android:name="org.chromium.chrome.browser.multiwindow.MultiInstanceChromeTabbedActivity"
-            android:theme="@style/Theme.Chromium.TabbedMode"
-            android:exported="false"
-            {{ self.chrome_activity_common() }}>
-            {{ self.extra_web_rendering_activity_definitions() }}
-        </activity>
 
         <!--
             TODO(crbug.com/40698801): investigate why
@@ -1092,6 +1086,9 @@ by a child template that "extends" this file.
         <receiver android:name="org.chromium.chrome.browser.announcement.AnnouncementNotificationManager$Receiver"
             android:exported="false"/>
 
+        <service android:name="org.chromium.chrome.browser.notifications.NotificationIntentInterceptorService"
+            android:exported="false"/>
+
         <receiver android:name="org.chromium.chrome.browser.notifications.NotificationIntentInterceptor$Receiver"
             android:exported="false"/>
 
diff --git a/tools/under-control/src/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc b/tools/under-control/src/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
index 9059ada82..0c1a8f5ff 100755
--- a/tools/under-control/src/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
+++ b/tools/under-control/src/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate.cc
@@ -156,7 +156,7 @@
 #include "chrome/browser/android/oom_intervention/oom_intervention_decider.h"
 #include "chrome/browser/android/webapps/webapp_registry.h"
 #include "chrome/browser/offline_pages/offline_page_model_factory.h"
-#include "chrome/browser/profiles/profile_android.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
 #include "components/cdm/browser/media_drm_storage_impl.h"  // nogncheck crbug.com/1125897
@@ -677,9 +677,8 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
       }
 
 #if BUILDFLAG(IS_ANDROID)
-      Java_PackageHash_onCookiesDeleted(
-          base::android::AttachCurrentThread(),
-          ProfileAndroid::FromProfile(profile_)->GetJavaObject());
+      Java_PackageHash_onCookiesDeleted(base::android::AttachCurrentThread(),
+                                        profile_->GetJavaObject());
 #endif
     }
 
@@ -832,13 +831,15 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
         ContentSettingsType::SITE_ENGAGEMENT, base::Time(), base::Time::Max(),
         website_settings_filter);
 
-    if (MediaEngagementService::IsEnabled()) {
-      MediaEngagementService::Get(profile_)->ClearDataBetweenTime(delete_begin_,
-                                                                  delete_end_);
-    }
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      if (MediaEngagementService::IsEnabled()) {
+        MediaEngagementService::Get(profile_)->ClearDataBetweenTime(
+            delete_begin_, delete_end_);
+      }
 
-    PermissionActionsHistoryFactory::GetForProfile(profile_)->ClearHistory(
-        delete_begin_, delete_end_);
+      PermissionActionsHistoryFactory::GetForProfile(profile_)->ClearHistory(
+          delete_begin_, delete_end_);
+    }
   }
 
   if ((remove_mask & constants::DATA_TYPE_SITE_USAGE_DATA) ||
@@ -855,6 +856,14 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
         ContentSettingsType::REVOKED_UNUSED_SITE_PERMISSIONS, delete_begin_,
         delete_end_, website_settings_filter);
 
+    host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
+        ContentSettingsType::REVOKED_ABUSIVE_NOTIFICATION_PERMISSIONS,
+        delete_begin_, delete_end_, website_settings_filter);
+
+    host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
+        ContentSettingsType::NOTIFICATION_PERMISSION_REVIEW, delete_begin_,
+        delete_end_, website_settings_filter);
+
 #if !BUILDFLAG(IS_ANDROID)
     host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
         ContentSettingsType::INTENT_PICKER_DISPLAY, delete_begin_, delete_end_,
@@ -864,14 +873,6 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
         ContentSettingsType::FILE_SYSTEM_LAST_PICKED_DIRECTORY, delete_begin,
         delete_end, website_settings_filter);
 
-    host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
-        ContentSettingsType::NOTIFICATION_PERMISSION_REVIEW, delete_begin_,
-        delete_end_, website_settings_filter);
-
-    host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
-        ContentSettingsType::REVOKED_ABUSIVE_NOTIFICATION_PERMISSIONS,
-        delete_begin_, delete_end_, website_settings_filter);
-
     host_content_settings_map_->ClearSettingsForOneTypeWithPredicate(
         ContentSettingsType::PRIVATE_NETWORK_GUARD, delete_begin_, delete_end_,
         website_settings_filter);
@@ -1067,39 +1068,48 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
     // dependencies or reimplement the relevant part of WebCacheManager
     // in content/browser.
     // TODO(crbug.com/40657761): add a test for this.
-    for (content::RenderProcessHost::iterator iter =
-             content::RenderProcessHost::AllHostsIterator();
-         !iter.IsAtEnd(); iter.Advance()) {
-      content::RenderProcessHost* render_process_host = iter.GetCurrentValue();
-      if (render_process_host->GetBrowserContext() == profile_ &&
-          render_process_host->IsInitializedAndNotDead()) {
-        web_cache::WebCacheManager::GetInstance()->ClearCacheForProcess(
-            render_process_host->GetID());
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      for (content::RenderProcessHost::iterator iter =
+               content::RenderProcessHost::AllHostsIterator();
+           !iter.IsAtEnd(); iter.Advance()) {
+        content::RenderProcessHost* render_process_host =
+            iter.GetCurrentValue();
+        if (render_process_host->GetBrowserContext() == profile_ &&
+            render_process_host->IsInitializedAndNotDead()) {
+          web_cache::WebCacheManager::GetInstance()->ClearCacheForProcess(
+              render_process_host->GetID());
+        }
       }
     }
 
 #if BUILDFLAG(ENABLE_NACL)
-    nacl::NaClBrowser::GetInstance()->ClearValidationCache(UIThreadTrampoline(
-        CreateTaskCompletionClosure(TracingDataType::kNaclCache)));
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      nacl::NaClBrowser::GetInstance()->ClearValidationCache(UIThreadTrampoline(
+          CreateTaskCompletionClosure(TracingDataType::kNaclCache)));
 
-    pnacl::PnaclHost::GetInstance()->ClearTranslationCacheEntriesBetween(
-        delete_begin_, delete_end_,
-        UIThreadTrampoline(
-            CreateTaskCompletionClosure(TracingDataType::kPnaclCache)));
+      pnacl::PnaclHost::GetInstance()->ClearTranslationCacheEntriesBetween(
+          delete_begin_, delete_end_,
+          UIThreadTrampoline(
+              CreateTaskCompletionClosure(TracingDataType::kPnaclCache)));
+    }
 #endif
 
-    browsing_data::RemovePrerenderCacheData(
-        prerender::NoStatePrefetchManagerFactory::GetForBrowserContext(
-            profile_));
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      browsing_data::RemovePrerenderCacheData(
+          prerender::NoStatePrefetchManagerFactory::GetForBrowserContext(
+              profile_));
+    }
 
 #if BUILDFLAG(IS_ANDROID)
 #if BUILDFLAG(ENABLE_FEED_V2)
-    // Don't bridge through if the service isn't present, which means we're
-    // probably running in a native unit test.
-    feed::FeedService* service =
-        feed::FeedServiceFactory::GetForBrowserContext(profile_);
-    if (service) {
-      service->ClearCachedData();
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      // Don't bridge through if the service isn't present, which means
+      // we're probably running in a native unit test.
+      feed::FeedService* service =
+          feed::FeedServiceFactory::GetForBrowserContext(profile_);
+      if (service) {
+        service->ClearCachedData();
+      }
     }
 #endif  // BUILDFLAG(ENABLE_FEED_V2)
 
@@ -1121,18 +1131,19 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
 #endif
 
     // TODO(crbug.com/41380998): Remove null-check.
-    auto* webrtc_event_log_manager = WebRtcEventLogManager::GetInstance();
-    if (webrtc_event_log_manager) {
-      webrtc_event_log_manager->ClearCacheForBrowserContext(
-          profile_, delete_begin_, delete_end_,
-          CreateTaskCompletionClosure(TracingDataType::kWebrtcEventLogs));
-    } else {
-      LOG(ERROR) << "WebRtcEventLogManager not instantiated.";
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
+      auto* webrtc_event_log_manager = WebRtcEventLogManager::GetInstance();
+      if (webrtc_event_log_manager) {
+        webrtc_event_log_manager->ClearCacheForBrowserContext(
+            profile_, delete_begin_, delete_end_,
+            CreateTaskCompletionClosure(TracingDataType::kWebrtcEventLogs));
+      } else {
+        LOG(ERROR) << "WebRtcEventLogManager not instantiated.";
+      }
     }
 
     // Mark cached favicons as expired to force redownload on next visit.
-    if (filter_builder->GetMode() ==
-        BrowsingDataFilterBuilder::Mode::kPreserve) {
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
       history::HistoryService* history_service =
           HistoryServiceFactory::GetForProfile(
               profile_, ServiceAccessType::EXPLICIT_ACCESS);
@@ -1157,7 +1168,7 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
     // On Chrome OS, delete any content protection platform keys.
     // Platform keys do not support filtering by domain, so skip this if
     // clearing only a specified set of sites.
-    if (filter_builder->GetMode() != BrowsingDataFilterBuilder::Mode::kDelete) {
+    if (filter_builder->MatchesMostOriginsAndDomains()) {
       const user_manager::User* user =
           ash::ProfileHelper::Get()->GetUserByProfile(profile_);
       if (!user) {
@@ -1278,9 +1289,11 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
   //
   // TODO(alexmos): Support finer-grained filtering based on time ranges and
   // |filter|. For now, conservatively delete all saved isolated origins.
-  if (remove_mask &
-      (constants::DATA_TYPE_ISOLATED_ORIGINS | constants::DATA_TYPE_HISTORY))
+  if (remove_mask & (constants::DATA_TYPE_ISOLATED_ORIGINS |
+                     constants::DATA_TYPE_HISTORY) &&
+      filter_builder->MatchesMostOriginsAndDomains()) {
     browsing_data::RemoveSiteIsolationData(prefs);
+  }
 
   if (remove_mask & constants::DATA_TYPE_HISTORY) {
     network::mojom::NetworkContext* network_context =
@@ -1318,7 +1331,7 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
   //////////////////////////////////////////////////////////////////////////////
   // Remove external protocol data.
   if (remove_mask & constants::DATA_TYPE_EXTERNAL_PROTOCOL_DATA &&
-      filter_builder->GetMode() == BrowsingDataFilterBuilder::Mode::kPreserve) {
+      filter_builder->MatchesMostOriginsAndDomains()) {
     ExternalProtocolHandler::ClearData(profile_);
   }
 
@@ -1340,7 +1353,8 @@ void ChromeBrowsingDataRemoverDelegate::RemoveEmbedderData(
   // site data are cleared, or when history is cleared. This is because clearing
   // cookies or history implies forgetting that the user has logged into sites.
   if (remove_mask &
-      (constants::DATA_TYPE_SITE_DATA | constants::DATA_TYPE_HISTORY)) {
+          (constants::DATA_TYPE_SITE_DATA | constants::DATA_TYPE_HISTORY) &&
+      filter_builder->MatchesMostOriginsAndDomains()) {
     login_detection::prefs::RemoveLoginDetectionData(prefs);
   }
 
diff --git a/tools/under-control/src/chrome/browser/chrome_browser_interface_binders.cc b/tools/under-control/src/chrome/browser/chrome_browser_interface_binders.cc
index 51a4b165d..00d0d6ddb 100755
--- a/tools/under-control/src/chrome/browser/chrome_browser_interface_binders.cc
+++ b/tools/under-control/src/chrome/browser/chrome_browser_interface_binders.cc
@@ -13,6 +13,7 @@
 #include "build/chromeos_buildflags.h"
 #include "chrome/browser/accessibility/accessibility_labels_service.h"
 #include "chrome/browser/accessibility/accessibility_labels_service_factory.h"
+#include "chrome/browser/ai/ai_manager_impl.h"
 #include "chrome/browser/ash/drive/file_system_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/buildflags.h"
@@ -21,7 +22,6 @@
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory.h"
 #include "chrome/browser/history_clusters/history_clusters_service_factory.h"
 #include "chrome/browser/media/media_engagement_score_details.mojom.h"
-#include "chrome/browser/model_execution/model_manager_impl.h"
 #include "chrome/browser/navigation_predictor/navigation_predictor.h"
 #include "chrome/browser/on_device_translation/translation_manager_impl.h"
 #include "chrome/browser/optimization_guide/optimization_guide_internals_ui.h"
@@ -36,9 +36,10 @@
 #include "chrome/browser/ssl/security_state_tab_helper.h"
 #include "chrome/browser/translate/translate_frame_binder.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
-#include "chrome/browser/ui/side_panel/companion/companion_utils.h"
+#include "chrome/browser/ui/views/side_panel/companion/companion_utils.h"
 #include "chrome/browser/ui/ui_features.h"
 #include "chrome/browser/ui/webui/browsing_topics/browsing_topics_internals_ui.h"
+#include "chrome/browser/ui/webui/data_sharing_internals/data_sharing_internals_ui.h"
 #include "chrome/browser/ui/webui/engagement/site_engagement_ui.h"
 #include "chrome/browser/ui/webui/internals/internals_ui.h"
 #include "chrome/browser/ui/webui/location_internals/location_internals.mojom.h"
@@ -62,6 +63,7 @@
 #include "components/commerce/content/browser/commerce_internals_ui.h"
 #include "components/commerce/core/internals/mojom/commerce_internals.mojom.h"
 #include "components/compose/buildflags.h"
+#include "components/data_sharing/public/features.h"
 #include "components/dom_distiller/content/browser/distillability_driver.h"
 #include "components/dom_distiller/content/browser/distiller_javascript_service_impl.h"
 #include "components/dom_distiller/content/common/mojom/distillability_service.mojom.h"
@@ -160,6 +162,7 @@
 #include "chrome/browser/new_tab_page/modules/history_clusters/history_clusters.mojom.h"
 #include "chrome/browser/new_tab_page/modules/photos/photos.mojom.h"
 #include "chrome/browser/new_tab_page/modules/recipes/recipes.mojom.h"
+#include "chrome/browser/new_tab_page/modules/v2/calendar/google_calendar.mojom.h"
 #include "chrome/browser/new_tab_page/modules/v2/history_clusters/history_clusters_v2.mojom.h"
 #include "chrome/browser/new_tab_page/modules/v2/most_relevant_tab_resumption/most_relevant_tab_resumption.mojom.h"
 #include "chrome/browser/new_tab_page/modules/v2/tab_resumption/tab_resumption.mojom.h"
@@ -179,9 +182,11 @@
 #endif
 #include "chrome/browser/ui/lens/lens_untrusted_ui.h"
 #include "chrome/browser/ui/lens/search_bubble_ui.h"
-#include "chrome/browser/ui/side_panel/customize_chrome/customize_chrome_utils.h"
+#include "chrome/browser/ui/views/side_panel/customize_chrome/customize_chrome_utils.h"
 #include "chrome/browser/ui/webui/commerce/product_specifications_ui.h"
 #include "chrome/browser/ui/webui/commerce/shopping_insights_side_panel_ui.h"
+#include "chrome/browser/ui/webui/data_sharing/data_sharing.mojom.h"
+#include "chrome/browser/ui/webui/data_sharing/data_sharing_ui.h"
 #include "chrome/browser/ui/webui/hats/hats_ui.h"
 #include "chrome/browser/ui/webui/history/history_ui.h"
 #include "chrome/browser/ui/webui/internals/user_education/user_education_internals.mojom.h"
@@ -203,12 +208,9 @@
 #include "chrome/browser/ui/webui/side_panel/read_anything/read_anything_untrusted_ui.h"
 #include "chrome/browser/ui/webui/side_panel/reading_list/reading_list.mojom.h"
 #include "chrome/browser/ui/webui/side_panel/reading_list/reading_list_ui.h"
-#include "chrome/browser/ui/webui/side_panel/user_notes/user_notes.mojom.h"
-#include "chrome/browser/ui/webui/side_panel/user_notes/user_notes_side_panel_ui.h"
 #include "chrome/browser/ui/webui/tab_search/tab_search.mojom.h"
 #include "chrome/browser/ui/webui/tab_search/tab_search_ui.h"
 #include "chrome/browser/ui/webui/webui_gallery/webui_gallery_ui.h"
-#include "chrome/browser/ui/webui/whats_new/whats_new_ui.h"
 #include "chrome/common/webui_url_constants.h"
 #include "components/optimization_guide/core/optimization_guide_features.h"
 #include "components/page_image_service/mojom/page_image_service.mojom.h"
@@ -239,6 +241,10 @@
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS)
 
+#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+#include "chrome/browser/ui/webui/whats_new/whats_new_ui.h"
+#endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+
 #if !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)
 #include "chrome/browser/ui/webui/app_home/app_home.mojom.h"
 #include "chrome/browser/ui/webui/app_home/app_home_ui.h"
@@ -250,14 +256,11 @@
 #include "ui/webui/resources/cr_components/customize_themes/customize_themes.mojom.h"
 #endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS_ASH)
 
-#if BUILDFLAG(IS_CHROMEOS_ASH) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
-#include "ash/webui/conch/conch_ui.h"
-#include "ash/webui/conch/mojom/conch.mojom.h"
-#endif  // BUILDFLAG(IS_CHROMEOS_ASH) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
-
 #if BUILDFLAG(IS_CHROMEOS_ASH)
 #include "ash/constants/ash_features.h"
 #include "ash/public/mojom/hid_preserving_bluetooth_state_controller.mojom.h"
+#include "ash/webui/annotator/mojom/untrusted_annotator.mojom.h"
+#include "ash/webui/annotator/untrusted_annotator_ui.h"
 #include "ash/webui/camera_app_ui/camera_app_helper.mojom.h"
 #include "ash/webui/camera_app_ui/camera_app_ui.h"
 #include "ash/webui/color_internals/color_internals_ui.h"
@@ -281,10 +284,14 @@
 #include "ash/webui/files_internals/mojom/files_internals.mojom.h"
 #include "ash/webui/firmware_update_ui/firmware_update_app_ui.h"
 #include "ash/webui/firmware_update_ui/mojom/firmware_update.mojom.h"
+#include "ash/webui/focus_mode/focus_mode_ui.h"
+#include "ash/webui/focus_mode/mojom/focus_mode.mojom.h"
 #include "ash/webui/help_app_ui/help_app_ui.h"
 #include "ash/webui/help_app_ui/help_app_ui.mojom.h"
 #include "ash/webui/help_app_ui/help_app_untrusted_ui.h"
 #include "ash/webui/help_app_ui/search/search.mojom.h"
+#include "ash/webui/mall/mall_ui.h"
+#include "ash/webui/mall/mall_ui.mojom.h"
 #include "ash/webui/media_app_ui/media_app_guest_ui.h"
 #include "ash/webui/media_app_ui/media_app_ui.h"
 #include "ash/webui/media_app_ui/media_app_ui.mojom.h"
@@ -297,11 +304,12 @@
 #include "ash/webui/personalization_app/personalization_app_ui.h"
 #include "ash/webui/personalization_app/search/search.mojom.h"
 #include "ash/webui/print_management/print_management_ui.h"
+#include "ash/webui/print_preview_cros/mojom/destination_provider.mojom.h"
 #include "ash/webui/print_preview_cros/print_preview_cros_ui.h"
-#include "ash/webui/projector_app/mojom/untrusted_annotator.mojom.h"
 #include "ash/webui/projector_app/mojom/untrusted_projector.mojom.h"
-#include "ash/webui/projector_app/untrusted_projector_annotator_ui.h"
 #include "ash/webui/projector_app/untrusted_projector_ui.h"
+#include "ash/webui/recorder_app_ui/mojom/recorder_app.mojom.h"
+#include "ash/webui/recorder_app_ui/recorder_app_ui.h"
 #include "ash/webui/scanning/mojom/scanning.mojom.h"
 #include "ash/webui/scanning/scanning_ui.h"
 #include "ash/webui/shimless_rma/shimless_rma.h"
@@ -362,6 +370,7 @@
 #include "chrome/browser/ui/webui/ash/settings/os_settings_ui.h"
 #include "chrome/browser/ui/webui/ash/settings/pages/apps/mojom/app_notification_handler.mojom.h"
 #include "chrome/browser/ui/webui/ash/settings/pages/apps/mojom/app_parental_controls_handler.mojom.h"
+#include "chrome/browser/ui/webui/ash/settings/pages/date_time/mojom/date_time_handler.mojom.h"
 #include "chrome/browser/ui/webui/ash/settings/pages/device/display_settings/display_settings_provider.mojom.h"
 #include "chrome/browser/ui/webui/ash/settings/pages/device/input_device_settings/input_device_settings_provider.mojom.h"
 #include "chrome/browser/ui/webui/ash/settings/pages/files/mojom/google_drive_handler.mojom.h"
@@ -378,6 +387,8 @@
 #include "chrome/browser/ui/webui/nearby_share/nearby_share_dialog_ui.h"
 #include "chromeos/ash/components/audio/public/mojom/cros_audio_config.mojom.h"
 #include "chromeos/ash/components/emoji/emoji_search.mojom.h"
+#include "chromeos/ash/components/kiosk/vision/webui/kiosk_vision_internals.mojom.h"
+#include "chromeos/ash/components/kiosk/vision/webui/ui_controller.h"
 #include "chromeos/ash/components/local_search_service/public/mojom/index.mojom.h"
 #include "chromeos/ash/services/auth_factor_config/public/mojom/auth_factor_config.mojom.h"
 #include "chromeos/ash/services/bluetooth_config/public/mojom/cros_bluetooth_config.mojom.h"
@@ -1136,6 +1147,10 @@ void PopulateChromeWebUIFrameBinders(
       commerce::mojom::CommerceInternalsHandlerFactory,
       commerce::CommerceInternalsUI>(map);
 
+  RegisterWebUIControllerInterfaceBinder<
+      data_sharing_internals::mojom::PageHandlerFactory,
+      DataSharingInternalsUI>(map);
+
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) || \
     BUILDFLAG(IS_CHROMEOS_ASH)
   RegisterWebUIControllerInterfaceBinder<
@@ -1225,7 +1240,7 @@ void PopulateChromeWebUIFrameBinders(
           history_clusters::mojom::PageHandler, HistoryUI>(map);
     }
   }
-  if (base::FeatureList::IsEnabled(history_embeddings::kHistoryEmbeddings)) {
+  if (history_embeddings::IsHistoryEmbeddingEnabled()) {
     RegisterWebUIControllerInterfaceBinder<
         history_embeddings::mojom::PageHandler, HistoryUI>(map);
   }
@@ -1234,9 +1249,17 @@ void PopulateChromeWebUIFrameBinders(
       page_image_service::mojom::PageImageServiceHandler, HistoryUI,
       HistoryClustersSidePanelUI, NewTabPageUI, BookmarksSidePanelUI>(map);
 
+#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+  RegisterWebUIControllerInterfaceBinder<whats_new::mojom::PageHandlerFactory,
+                                         WhatsNewUI>(map);
+#endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+
   RegisterWebUIControllerInterfaceBinder<
-      browser_command::mojom::CommandHandlerFactory, NewTabPageUI, WhatsNewUI>(
-      map);
+      browser_command::mojom::CommandHandlerFactory,
+#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+      WhatsNewUI,
+#endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
+      NewTabPageUI>(map);
 
   RegisterWebUIControllerInterfaceBinder<searchbox::mojom::PageHandler,
                                          NewTabPageUI, OmniboxPopupUI>(map);
@@ -1335,6 +1358,11 @@ void PopulateChromeWebUIFrameBinders(
         map);
   }
 
+  if (base::FeatureList::IsEnabled(ntp_features::kNtpCalendarModule)) {
+    RegisterWebUIControllerInterfaceBinder<
+        ntp::calendar::mojom::GoogleCalendarPageHandler, NewTabPageUI>(map);
+  }
+
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   if (ash::features::IsBluetoothDisconnectWarningEnabled()) {
     RegisterWebUIControllerInterfaceBinder<
@@ -1380,16 +1408,14 @@ void PopulateChromeWebUIFrameBinders(
         CustomizeChromeUI>(map);
   }
 
-  if (user_notes::IsUserNotesEnabled()) {
-    RegisterWebUIControllerInterfaceBinder<
-        side_panel::mojom::UserNotesPageHandlerFactory, UserNotesSidePanelUI>(
-        map);
-  }
+  RegisterWebUIControllerInterfaceBinder<
+      read_anything::mojom::UntrustedPageHandlerFactory,
+      ReadAnythingUntrustedUI>(map);
 
-  if (features::IsReadAnythingEnabled()) {
+  if (base::FeatureList::IsEnabled(
+          data_sharing::features::kDataSharingFeature)) {
     RegisterWebUIControllerInterfaceBinder<
-        read_anything::mojom::UntrustedPageHandlerFactory,
-        ReadAnythingUntrustedUI>(map);
+        data_sharing::mojom::PageHandlerFactory, DataSharingUI>(map);
   }
 
   RegisterWebUIControllerInterfaceBinder<tab_search::mojom::PageHandlerFactory,
@@ -1638,6 +1664,12 @@ void PopulateChromeWebUIFrameBinders(
       ash::shortcut_customization::mojom::SearchHandler,
       ash::ShortcutCustomizationAppUI>(map);
 
+  if (ash::features::IsPrinterPreviewCrosAppEnabled()) {
+    RegisterWebUIControllerInterfaceBinder<
+        ash::printing::print_preview::mojom::DestinationProvider,
+        ash::printing::print_preview::PrintPreviewCrosUI>(map);
+  }
+
   RegisterWebUIControllerInterfaceBinder<
       emoji_picker::mojom::PageHandlerFactory, ash::EmojiUI>(map);
 
@@ -1690,11 +1722,9 @@ void PopulateChromeWebUIFrameBinders(
       ash::audio_config::mojom::CrosAudioConfig, ash::settings::OSSettingsUI>(
       map);
 
-  if (ash::features::IsHotspotEnabled()) {
-    RegisterWebUIControllerInterfaceBinder<
-        ash::hotspot_config::mojom::CrosHotspotConfig,
-        ash::settings::OSSettingsUI>(map);
-  }
+  RegisterWebUIControllerInterfaceBinder<
+      ash::hotspot_config::mojom::CrosHotspotConfig,
+      ash::settings::OSSettingsUI>(map);
 
   if (base::FeatureList::IsEnabled(
           ash::features::kSystemJapanesePhysicalTyping)) {
@@ -1706,6 +1736,10 @@ void PopulateChromeWebUIFrameBinders(
   RegisterWebUIControllerInterfaceBinder<audio::mojom::PageHandlerFactory,
                                          ash::AudioUI>(map);
 
+  RegisterWebUIControllerInterfaceBinder<
+      ash::kiosk_vision::mojom::PageConnector, ash::kiosk_vision::UIController>(
+      map);
+
   RegisterWebUIControllerInterfaceBinder<
       ash::extended_updates::mojom::PageHandlerFactory,
       ash::extended_updates::ExtendedUpdatesUI>(map);
@@ -1743,6 +1777,10 @@ void PopulateChromeWebUIFrameBinders(
       ash::settings::google_drive::mojom::PageHandlerFactory,
       ash::settings::OSSettingsUI>(map);
 
+  RegisterWebUIControllerInterfaceBinder<
+      ash::settings::date_time::mojom::PageHandlerFactory,
+      ash::settings::OSSettingsUI>(map);
+
   RegisterWebUIControllerInterfaceBinder<
       ash::screens_factory::mojom::ScreensFactory, ash::OobeUI>(map);
 
@@ -1830,6 +1868,13 @@ void PopulateChromeWebUIFrameBinders(
         privacy_sandbox_internals::mojom::PageHandler,
         privacy_sandbox_internals::PrivacySandboxInternalsUI>(map);
   }
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+  if (ash::features::IsFocusModeEnabled()) {
+    RegisterWebUIControllerInterfaceBinder<
+        ash::focus_mode::mojom::TrackProvider, ash::FocusModeUI>(map);
+  }
+#endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 }
 
 void PopulateChromeWebUIFrameInterfaceBrokers(
@@ -1847,11 +1892,11 @@ void PopulateChromeWebUIFrameInterfaceBrokers(
       .Add<ash::mojom::status_area_internals::PageHandler>();
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH) && !defined(OFFICIAL_BUILD)
 
-#if BUILDFLAG(IS_CHROMEOS_ASH) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
-  registry.ForWebUI<ash::ConchUI>()
-      .Add<ash::conch::mojom::PageHandler>()
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+  registry.ForWebUI<ash::RecorderAppUI>()
+      .Add<ash::recorder_app::mojom::PageHandler>()
       .Add<color_change_listener::mojom::PageHandler>();
-#endif  // BUILDFLAG(IS_CHROMEOS_ASH) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
+#endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   registry.ForWebUI<ash::CameraAppUI>()
@@ -1871,6 +1916,7 @@ void PopulateChromeWebUIFrameInterfaceBrokers(
       .Add<color_change_listener::mojom::PageHandler>();
   registry.ForWebUI<FeedbackUI>()
       .Add<color_change_listener::mojom::PageHandler>();
+  registry.ForWebUI<ash::MallUI>().Add<ash::mall::mojom::PageHandler>();
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
   // --- Section 2: chrome-untrusted:// WebUIs:
@@ -1884,7 +1930,7 @@ void PopulateChromeWebUIFrameInterfaceBrokers(
   registry.ForWebUI<ash::DemoModeAppUntrustedUI>()
       .Add<ash::mojom::demo_mode::UntrustedPageHandlerFactory>();
 
-  registry.ForWebUI<ash::UntrustedProjectorAnnotatorUI>()
+  registry.ForWebUI<ash::UntrustedAnnotatorUI>()
       .Add<ash::annotator::mojom::UntrustedAnnotatorPageHandlerFactory>();
 
   registry.ForWebUI<ash::UntrustedProjectorUI>()
@@ -1923,8 +1969,7 @@ void PopulateChromeWebUIFrameInterfaceBrokers(
     registry.ForWebUI<CompanionSidePanelUntrustedUI>()
         .Add<side_panel::mojom::CompanionPageHandlerFactory>();
   }
-  if (features::IsReadAnythingEnabled() &&
-      features::IsReadAnythingWebUIToolbarEnabled()) {
+  if (features::IsReadAnythingWebUIToolbarEnabled()) {
     registry.ForWebUI<ReadAnythingUntrustedUI>()
         .Add<color_change_listener::mojom::PageHandler>();
   }
diff --git a/tools/under-control/src/chrome/browser/chrome_content_browser_client.cc b/tools/under-control/src/chrome/browser/chrome_content_browser_client.cc
index 7acca810b..7c3178793 100755
--- a/tools/under-control/src/chrome/browser/chrome_content_browser_client.cc
+++ b/tools/under-control/src/chrome/browser/chrome_content_browser_client.cc
@@ -47,6 +47,7 @@
 #include "build/chromeos_buildflags.h"
 #include "build/config/chromebox_for_meetings/buildflags.h"  // PLATFORM_CFM
 #include "chrome/browser/after_startup_task_utils.h"
+#include "chrome/browser/ai/ai_manager_impl.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/bluetooth/chrome_bluetooth_delegate_impl_client.h"
 #include "chrome/browser/browser_about_handler.h"
@@ -97,7 +98,6 @@
 #include "chrome/browser/memory/chrome_browser_main_extra_parts_memory.h"
 #include "chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.h"
 #include "chrome/browser/metrics/chrome_feature_list_creator.h"
-#include "chrome/browser/model_execution/model_manager_impl.h"
 #include "chrome/browser/navigation_predictor/anchor_element_preloader.h"
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/profile_network_context_service.h"
@@ -190,7 +190,6 @@
 #include "chrome/browser/usb/chrome_usb_delegate.h"
 #include "chrome/browser/vr/vr_tab_helper.h"
 #include "chrome/browser/web_applications/isolated_web_apps/isolated_web_app_url_info.h"
-#include "chrome/browser/web_applications/isolated_web_apps/pending_install_info.h"
 #include "chrome/browser/webapps/web_app_offline.h"
 #include "chrome/browser/webauthn/webauthn_pref_names.h"
 #include "chrome/common/buildflags.h"
@@ -241,6 +240,8 @@
 #include "components/error_page/common/error_page_switches.h"
 #include "components/error_page/common/localized_error.h"
 #include "components/error_page/content/browser/net_error_auto_reloader.h"
+#include "components/fingerprinting_protection_filter/browser/fingerprinting_protection_filter_features.h"
+#include "components/fingerprinting_protection_filter/browser/throttle_manager.h"
 #include "components/google/core/common/google_switches.h"
 #include "components/heap_profiling/in_process/heap_profiler_controller.h"
 #include "components/history/content/browser/visited_link_navigation_throttle.h"
@@ -488,6 +489,7 @@
 #include "chrome/browser/flags/android/chrome_feature_list.h"
 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
 #include "chrome/browser/ui/webid/digital_identity_safety_interstitial_bridge_android.h"
+#include "chrome/browser/webid/digital_identity_provider_android.h"
 #include "chrome/common/chrome_descriptors.h"
 #include "components/browser_ui/accessibility/android/font_size_prefs_android.h"
 #include "components/crash/content/browser/child_exit_observer_android.h"
@@ -510,6 +512,10 @@
 #if !BUILDFLAG(IS_ANDROID)
 #include "chrome/browser/preloading/preview/preview_navigation_throttle.h"
 #include "chrome/browser/web_applications/isolated_web_apps/chrome_content_browser_client_isolated_web_apps_part.h"
+#include "chrome/browser/web_applications/locks/app_lock.h"
+#include "chrome/browser/web_applications/web_app_helpers.h"
+#include "chrome/browser/webid/digital_identity_provider_desktop.h"
+#include "third_party/blink/public/mojom/installedapp/related_application.mojom.h"
 #endif  // !BUILDFLAG(IS_ANDROID)
 
 #if BUILDFLAG(IS_CHROMEOS)
@@ -553,10 +559,11 @@
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/search/new_tab_page_navigation_throttle.h"
-#include "chrome/browser/ui/side_panel/read_anything/read_anything_side_panel_navigation_throttle.h"
+#include "chrome/browser/ui/views/side_panel/read_anything/read_anything_side_panel_navigation_throttle.h"
 #include "chrome/browser/ui/web_applications/tabbed_web_app_navigation_throttle.h"
 #include "chrome/browser/ui/web_applications/webui_web_app_navigation_throttle.h"
 #include "chrome/browser/ui/webui/chrome_content_browser_client_webui_part.h"
+#include "chrome/browser/ui/webui/webui_util_desktop.h"
 #include "chrome/browser/web_applications/isolated_web_apps/isolated_web_app_error_page.h"
 #include "chrome/browser/web_applications/isolated_web_apps/isolated_web_app_url_loader_factory.h"
 #include "chrome/browser/web_applications/policy/web_app_policy_manager.h"
@@ -614,7 +621,7 @@
 #endif
 
 #if BUILDFLAG(ENABLE_LENS_DESKTOP_GOOGLE_BRANDED_FEATURES)
-#include "chrome/browser/ui/lens/lens_side_panel_navigation_helper.h"
+#include "chrome/browser/ui/views/lens/lens_side_panel_navigation_helper.h"
 #endif
 
 #if BUILDFLAG(IS_LINUX)
@@ -738,10 +745,6 @@
 #include "chrome/browser/screen_ai/screen_ai_install_state.h"
 #endif
 
-#if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE) || !BUILDFLAG(IS_CHROMEOS_ASH)
-#include "ui/accessibility/accessibility_features.h"
-#endif
-
 #if BUILDFLAG(ENABLE_BOUND_SESSION_CREDENTIALS)
 #include "chrome/browser/signin/bound_session_credentials/bound_session_cookie_refresh_service.h"
 #include "chrome/browser/signin/bound_session_credentials/bound_session_cookie_refresh_service_factory.h"
@@ -956,7 +959,7 @@ blink::mojom::AutoplayPolicy GetAutoplayPolicyForWebContents(
              switches::autoplay::kDocumentUserActivationRequiredPolicy) {
     result = blink::mojom::AutoplayPolicy::kDocumentUserActivationRequired;
   } else {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
   }
 
 #if !BUILDFLAG(IS_ANDROID)
@@ -1458,6 +1461,25 @@ MaybeCreateVisitedLinkNavigationThrottleFor(
 ChromeContentBrowserClient::PopupNavigationDelegateFactory
     g_popup_navigation_delegate_factory = &CreatePopupNavigationDelegate;
 
+bool DetermineIfDevtoolsUserForProcessPerSite() {
+  bool is_devtools_user = false;
+  if (ProfileManager* profile_manager = g_browser_process->profile_manager()) {
+    std::vector<Profile*> profiles = profile_manager->GetLoadedProfiles();
+    for (auto* profile : profiles) {
+      if (profile->GetPrefs()->HasPrefPath(
+              prefs::kDevToolsSyncedPreferencesSyncDisabled) ||
+          profile->GetPrefs()->HasPrefPath(prefs::kDevToolsPreferences)) {
+        is_devtools_user = true;
+        break;
+      }
+    }
+  }
+  base::UmaHistogramBoolean(
+      "SiteIsolation.ProcessPerSiteWithMainFrameThreshold.IsDevToolsUser",
+      is_devtools_user);
+  return is_devtools_user;
+}
+
 }  // namespace
 
 // static
@@ -1586,10 +1608,17 @@ void ChromeContentBrowserClient::RegisterProfilePrefs(
   registry->RegisterBooleanPref(policy::policy_prefs::kMutationEventsEnabled,
                                 false);
 
+  registry->RegisterBooleanPref(
+      policy::policy_prefs::kCSSCustomStateDeprecatedSyntaxEnabled,
+      /*default_value=*/false);
+
   registry->RegisterBooleanPref(
       policy::policy_prefs::kBeforeunloadEventCancelByPreventDefaultEnabled,
       true);
 
+  registry->RegisterBooleanPref(
+      policy::policy_prefs::kKeyboardFocusableScrollersEnabled, true);
+
   registry->RegisterBooleanPref(
       policy::policy_prefs::
           kAllowBackForwardCacheForCacheControlNoStorePageEnabled,
@@ -1951,6 +1980,18 @@ bool ChromeContentBrowserClient::ShouldUseProcessPerSite(
   return false;
 }
 
+bool ChromeContentBrowserClient::ShouldAllowProcessPerSiteForMultipleMainFrames(
+    content::BrowserContext* browser_context) {
+  static bool is_devtools_user = DetermineIfDevtoolsUserForProcessPerSite();
+
+  // TODO(dtapuska): Implement enterprise policy support here.
+  if (is_devtools_user && base::FeatureList::IsEnabled(
+                              features::kProcessPerSiteSkipDevtoolsUsers)) {
+    return false;
+  }
+  return true;
+}
+
 bool ChromeContentBrowserClient::ShouldUseSpareRenderProcessHost(
     content::BrowserContext* browser_context,
     const GURL& site_url) {
@@ -2264,23 +2305,8 @@ ChromeContentBrowserClient::GetPermissionsPolicyForIsolatedWebApp(
   if (app_origin.scheme() == extensions::kExtensionScheme) {
     return std::nullopt;
   }
-  CHECK(web_contents);
-  if (web_app::IsolatedWebAppPendingInstallInfo::HasPendingInstallSource(
-          *web_contents)) {
-    // We allow sync-xhr for apps that are being installed or updated to
-    // allow synchronous requests from the generated install page, which is
-    // used to implement manifest fallback logic while we migrate the
-    // expected manifest path from /manifest.webmanifest to
-    // /.well-known/manifest.webmanifest.
-    //
-    // TODO(crbug.com/325132780): Remove when manifest fallback logic is gone.
-    return blink::ParsedPermissionsPolicy(
-        {blink::ParsedPermissionsPolicyDeclaration(
-            blink::mojom::PermissionsPolicyFeature::kSyncXHR,
-            /*allowed_origins=*/{}, /*self_if_matches=*/app_origin,
-            /*matches_all_origins=*/false, /*matches_opaque_src=*/false)});
-  }
 
+  CHECK(web_contents);
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
   auto& registrar =
@@ -2657,6 +2683,17 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
         command_line->AppendSwitch(blink::switches::kMutationEventsEnabled);
       }
 
+      if (!prefs->GetBoolean(
+              policy::policy_prefs::kKeyboardFocusableScrollersEnabled)) {
+        command_line->AppendSwitch(
+            blink::switches::kKeyboardFocusableScrollersOptOut);
+      }
+      if (prefs->GetBoolean(
+              policy::policy_prefs::kCSSCustomStateDeprecatedSyntaxEnabled)) {
+        command_line->AppendSwitch(
+            blink::switches::kCSSCustomStateDeprecatedSyntaxEnabled);
+      }
+
       if (prefs->GetBoolean(policy::policy_prefs::
                                 kForcePermissionPolicyUnloadDefaultEnabled)) {
         command_line->AppendSwitch(
@@ -3326,6 +3363,7 @@ bool ChromeContentBrowserClient::IsAttributionReportingOperationAllowed(
       return allowed;
     }
     case AttributionReportingOperation::kSourceVerboseDebugReport:
+    case AttributionReportingOperation::kSourceAggregatableDebugReport:
     case AttributionReportingOperation::kOsSourceVerboseDebugReport:
       DCHECK(source_origin);
       DCHECK(reporting_origin);
@@ -3346,6 +3384,7 @@ bool ChromeContentBrowserClient::IsAttributionReportingOperationAllowed(
       return allowed;
     }
     case AttributionReportingOperation::kTriggerVerboseDebugReport:
+    case AttributionReportingOperation::kTriggerAggregatableDebugReport:
     case AttributionReportingOperation::kOsTriggerVerboseDebugReport:
       DCHECK(destination_origin);
       DCHECK(reporting_origin);
@@ -3486,6 +3525,7 @@ bool ChromeContentBrowserClient::IsCookieDeprecationLabelAllowedForContext(
 
 bool ChromeContentBrowserClient::IsFullCookieAccessAllowed(
     content::BrowserContext* browser_context,
+    content::WebContents* web_contents,
     const GURL& url,
     const blink::StorageKey& storage_key) {
   Profile* profile = Profile::FromBrowserContext(browser_context);
@@ -3507,7 +3547,7 @@ void ChromeContentBrowserClient::OnTrustAnchorUsed(
       policy::PolicyCertServiceFactory::GetForProfile(
           Profile::FromBrowserContext(browser_context));
   if (!service) {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
     return;
   }
   service->SetUsedPolicyCertificates();
@@ -3582,6 +3622,15 @@ ChromeContentBrowserClient::GetGeneratedCodeCacheSettings(
   return content::GeneratedCodeCacheSettings(true, size_in_bytes, cache_path);
 }
 
+std::string ChromeContentBrowserClient::GetWebUIHostnameForCodeCacheMetrics(
+    const GURL& webui_url) const {
+#if !BUILDFLAG(IS_ANDROID)
+  return webui::GetWebUIHostnameForCodeCacheMetrics(webui_url);
+#else
+  return ContentBrowserClient::GetWebUIHostnameForCodeCacheMetrics(webui_url);
+#endif
+}
+
 void ChromeContentBrowserClient::AllowCertificateError(
     content::WebContents* web_contents,
     int cert_error,
@@ -4140,10 +4189,8 @@ void ChromeContentBrowserClient::OverrideWebkitPrefs(
   web_prefs->always_show_focus =
       prefs->GetBoolean(ash::prefs::kAccessibilityFocusHighlightEnabled);
 #else
-  if (features::IsAccessibilityFocusHighlightEnabled()) {
-    web_prefs->always_show_focus =
-        prefs->GetBoolean(prefs::kAccessibilityFocusHighlightEnabled);
-  }
+  web_prefs->always_show_focus =
+      prefs->GetBoolean(prefs::kAccessibilityFocusHighlightEnabled);
 #endif
 
 #if BUILDFLAG(IS_ANDROID)
@@ -4950,6 +4997,12 @@ bool ChromeContentBrowserClient::ShouldEnableAudioProcessHighPriority() {
   return IsAudioProcessHighPriorityEnabled();
 }
 
+bool ChromeContentBrowserClient::ShouldUseSkiaFontManager(
+    const GURL& site_url) {
+  return (base::FeatureList::IsEnabled(features::kSkiaFontService) &&
+          IsTopChromeWebUIURL(site_url));
+}
+
 #endif  // BUILDFLAG(IS_WIN)
 
 void ChromeContentBrowserClient::
@@ -5163,6 +5216,14 @@ ChromeContentBrowserClient::CreateThrottlesForNavigation(
     throttle_manager->MaybeAppendNavigationThrottles(handle, &throttles);
   }
 
+  if (base::FeatureList::IsEnabled(fingerprinting_protection_filter::features::
+                                       kEnableFingerprintingProtectionFilter)) {
+    if (auto* throttle_manager = fingerprinting_protection_filter::
+            ThrottleManager::FromNavigationHandle(*handle)) {
+      throttle_manager->MaybeAppendNavigationThrottles(handle, &throttles);
+    }
+  }
+
   MaybeAddThrottle(
       LookalikeUrlNavigationThrottle::MaybeCreateNavigationThrottle(handle),
       &throttles);
@@ -5324,10 +5385,8 @@ ChromeContentBrowserClient::CreateThrottlesForNavigation(
 #endif
 
 #if !BUILDFLAG(IS_ANDROID)
-  if (features::IsReadAnythingEnabled()) {
-    MaybeAddThrottle(ReadAnythingSidePanelNavigationThrottle::CreateFor(handle),
-                     &throttles);
-  }
+  MaybeAddThrottle(ReadAnythingSidePanelNavigationThrottle::CreateFor(handle),
+                   &throttles);
 
   if (lens::features::IsLensOverlayEnabled()) {
     if (profile) {
@@ -5515,24 +5574,13 @@ ChromeContentBrowserClient::GetDevToolsBackgroundServiceExpirations(
 std::optional<base::TimeDelta>
 ChromeContentBrowserClient::GetSpareRendererDelayForSiteURL(
     const GURL& site_url) {
-  if (!base::FeatureList::IsEnabled(
-          features::kDeferredSpareRendererForTopChromeWebUI)) {
-    return std::nullopt;
-  }
-
   if (!IsTopChromeWebUIURL(site_url)) {
     return std::nullopt;
   }
 
-  // Prevent new spare renderer creation until page loading completes, signaled
-  // by WebContentsImpl::DidStopLoading. When enabled, delay spare renderer
-  // creation indefinitely by returning the maximum TimeDelta value.
-  if (features::kSpareRendererWarmupDelayUntilPageStopsLoading.Get()) {
-    return base::TimeDelta::Max();
-  }
-
-  // Otherwise, schedule new spare renderer creation after a predefined delay.
-  return features::kSpareRendererWarmupDelay.Get();
+  // Experiments have shown that delaying 2s brings the most significant
+  // improvements to Top Chrome WebUIs. See crbug.com/41490050.
+  return base::Seconds(2);
 }
 
 std::unique_ptr<content::TracingDelegate>
@@ -5737,7 +5785,8 @@ std::unique_ptr<blink::URLLoaderThrottle> CreateGoogleURLLoaderThrottle(
       BoundSessionCookieRefreshServiceFactory::GetForProfile(profile);
   std::unique_ptr<BoundSessionRequestThrottledHandler>
       bound_session_request_throttled_handler;
-  chrome::mojom::BoundSessionThrottlerParamsPtr bound_session_throttler_params;
+  std::vector<chrome::mojom::BoundSessionThrottlerParamsPtr>
+      bound_session_throttler_params;
 
   if (bound_session_cookie_refresh_service) {
     bound_session_request_throttled_handler =
@@ -7837,7 +7886,8 @@ void RunDigitalIdentityCallback(
 
 }  // anonymous namespace
 
-void ChromeContentBrowserClient::ShowDigitalIdentityInterstitialIfNeeded(
+content::ContentBrowserClient::DigitalIdentityInterstitialAbortCallback
+ChromeContentBrowserClient::ShowDigitalIdentityInterstitialIfNeeded(
     content::WebContents& web_contents,
     const url::Origin& origin,
     bool is_only_requesting_age,
@@ -7846,13 +7896,22 @@ void ChromeContentBrowserClient::ShowDigitalIdentityInterstitialIfNeeded(
       std::make_unique<DigitalIdentitySafetyInterstitialBridgeAndroid>();
   auto* bridge_ptr = bridge.get();
   // Callback takes ownership of |bridge|.
-  bridge_ptr->ShowInterstitialIfNeeded(
+  return bridge_ptr->ShowInterstitialIfNeeded(
       web_contents, origin, is_only_requesting_age,
       base::BindOnce(&RunDigitalIdentityCallback, std::move(bridge),
                      std::move(callback)));
 }
 #endif
 
+std::unique_ptr<content::DigitalIdentityProvider>
+ChromeContentBrowserClient::CreateDigitalIdentityProvider() {
+#if BUILDFLAG(IS_ANDROID)
+  return std::make_unique<DigitalIdentityProviderAndroid>();
+#else
+  return std::make_unique<DigitalIdentityProviderDesktop>();
+#endif
+}
+
 bool ChromeContentBrowserClient::SuppressDifferentOriginSubframeJSDialogs(
     content::BrowserContext* browser_context) {
   Profile* profile = Profile::FromBrowserContext(browser_context);
@@ -8167,7 +8226,7 @@ std::string ChromeContentBrowserClient::GetChildProcessSuffix(int child_flags) {
   if (child_flags == chrome::kChildProcessHelperAlerts) {
     return chrome::kMacHelperSuffixAlerts;
   }
-  NOTREACHED() << "Unsupported child process flags!";
+  NOTREACHED_IN_MIGRATION() << "Unsupported child process flags!";
   return {};
 }
 #endif  // BUILDFLAG(IS_MAC)
@@ -8335,6 +8394,7 @@ ChromeContentBrowserClient::GetIpProtectionProxyBypassPolicy() {
 
 void ChromeContentBrowserClient::MaybePrewarmHttpDiskCache(
     content::BrowserContext& browser_context,
+    const std::optional<url::Origin>& initiator_origin,
     const GURL& navigation_url) {
   Profile* profile = Profile::FromBrowserContext(&browser_context);
   CHECK(profile);
@@ -8342,7 +8402,7 @@ void ChromeContentBrowserClient::MaybePrewarmHttpDiskCache(
   // `loading_predictor` can be nullptr if the profile `IsOffTheRecord`.
   if (predictors::LoadingPredictor* loading_predictor =
           predictors::LoadingPredictorFactory::GetForProfile(profile)) {
-    loading_predictor->MaybePrewarmResources(navigation_url);
+    loading_predictor->MaybePrewarmResources(initiator_origin, navigation_url);
   }
 }
 
@@ -8351,18 +8411,18 @@ void ChromeContentBrowserClient::NotifyMultiCaptureStateChanged(
     content::GlobalRenderFrameHostId capturer_rfh_id,
     const std::string& label,
     MultiCaptureChanged state) {
-  content::WebContents* const web_contents = WebContents::FromRenderFrameHost(
-      RenderFrameHost::FromID(capturer_rfh_id));
-  if (!web_contents) {
-    return;
-  }
-
   switch (state) {
-    case MultiCaptureChanged::kStarted:
+    case MultiCaptureChanged::kStarted: {
+      content::WebContents* const web_contents =
+          WebContents::FromRenderFrameHost(
+              RenderFrameHost::FromID(capturer_rfh_id));
+      if (!web_contents) {
+        return;
+      }
       NotifyMultiCaptureStarted(
           label, web_contents,
           web_app::WebAppTabHelper::GetAppId(web_contents));
-      break;
+    } break;
     case MultiCaptureChanged::kStopped:
       NotifyMultiCaptureStopped(label);
       break;
@@ -8385,8 +8445,77 @@ bool ChromeContentBrowserClient::ShouldSuppressAXLoadComplete(
          url == GURL(chrome::kChromeUINewTabPageURL);
 }
 
-void ChromeContentBrowserClient::BindModelManager(
+void ChromeContentBrowserClient::BindAIManager(
     content::RenderFrameHost* rfh,
-    mojo::PendingReceiver<blink::mojom::ModelManager> receiver) {
-  ModelManagerImpl::Create(rfh, std::move(receiver));
+    mojo::PendingReceiver<blink::mojom::AIManager> receiver) {
+  AIManagerImpl::Create(rfh, std::move(receiver));
 }
+
+#if !BUILDFLAG(IS_ANDROID)
+void ChromeContentBrowserClient::QueryInstalledWebAppsByManifestId(
+    const GURL& frame_url,
+    const GURL& manifest_id,
+    content::BrowserContext* browser_context,
+    base::OnceCallback<void(std::optional<blink::mojom::RelatedApplication>)>
+        callback) {
+  Profile* profile = Profile::FromBrowserContext(browser_context);
+  web_app::WebAppProvider* const provider =
+      web_app::WebAppProvider::GetForLocalAppsUnchecked(profile);
+
+  webapps::AppId app_id = web_app::GenerateAppIdFromManifestId(manifest_id);
+
+  if (app_id.empty()) {
+    return std::move(callback).Run(std::nullopt);
+  }
+
+  // arg_for_shutdown must be explicitly defined, otherwise
+  // ScheduleCallbackWithResult cannot infer the optional type the nullopt
+  // is associated with.
+  std::optional<blink::mojom::RelatedApplication> arg_for_shutdown =
+      std::nullopt;
+  web_app::AppLockDescription lock_description(app_id);
+
+  provider->scheduler().ScheduleCallbackWithResult<web_app::AppLock>(
+      "QueryInstalledWebAppsByManifestId", std::move(lock_description),
+      base::BindOnce(
+          [](webapps::AppId app_id, webapps::ManifestId manifest_id,
+             GURL frame_url, web_app::AppLock& lock,
+             base::Value::Dict& debug_value)
+              -> std::optional<blink::mojom::RelatedApplication> {
+            debug_value.Set("input", base::Value::Dict()
+                                         .Set("manifest_id", manifest_id.spec())
+                                         .Set("frame_url", frame_url.spec()));
+
+            if (!lock.registrar().IsLocallyInstalled(app_id)) {
+              debug_value.Set("did_find_application", false);
+              return std::nullopt;
+            }
+
+            if (!lock.registrar().IsUrlInAppScope(frame_url, app_id)) {
+              debug_value.Set("did_find_application", false);
+              return std::nullopt;
+            }
+
+            blink::mojom::RelatedApplication application;
+            application.platform = "webapp";
+            application.id = lock.registrar().GetAppManifestId(app_id).spec();
+            // Note: This url is the manifest_url for purely legacy reasons
+            // where Android used to implement the unique identifier using the
+            // manifest url.
+            if (lock.registrar().GetAppManifestUrl(app_id).is_valid()) {
+              application.url =
+                  lock.registrar().GetAppManifestUrl(app_id).spec();
+            }
+
+            debug_value.Set("did_find_application", true);
+            debug_value.Set(
+                "application",
+                base::Value::Dict()
+                    .Set("app_id", application.id.value_or(""))
+                    .Set("manifest_url", application.url.value_or("")));
+            return application;
+          },
+          std::move(app_id), std::move(manifest_id), std::move(frame_url)),
+      std::move(callback), std::move(arg_for_shutdown));
+}
+#endif  // !BUILDFLAG(IS_ANDROID)
diff --git a/tools/under-control/src/chrome/browser/prefs/browser_prefs.cc b/tools/under-control/src/chrome/browser/prefs/browser_prefs.cc
index 21f6c6f5e..c93cccc81 100755
--- a/tools/under-control/src/chrome/browser/prefs/browser_prefs.cc
+++ b/tools/under-control/src/chrome/browser/prefs/browser_prefs.cc
@@ -78,15 +78,18 @@
 #include "chrome/browser/ui/browser_ui_prefs.h"
 #include "chrome/browser/ui/hats/hats_service_desktop.h"
 #include "chrome/browser/ui/network_profile_bubble.h"
+#include "chrome/browser/ui/performance_controls/performance_controls_metrics.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "chrome/browser/ui/search_engines/keyword_editor_controller.h"
 #include "chrome/browser/ui/send_tab_to_self/send_tab_to_self_bubble.h"
-#include "chrome/browser/ui/side_panel/side_panel_prefs.h"
 #include "chrome/browser/ui/tabs/organization/prefs.h"
 #include "chrome/browser/ui/tabs/pinned_tab_codec.h"
+#include "chrome/browser/ui/tabs/saved_tab_groups/saved_tab_group_pref_names.h"
+#include "chrome/browser/ui/tabs/tab_strip_prefs.h"
 #include "chrome/browser/ui/toolbar/chrome_labs/chrome_labs_prefs.h"
 #include "chrome/browser/ui/toolbar/chrome_location_bar_model_delegate.h"
 #include "chrome/browser/ui/toolbar/toolbar_pref_names.h"
+#include "chrome/browser/ui/views/side_panel/side_panel_prefs.h"
 #include "chrome/browser/ui/webui/accessibility/accessibility_ui.h"
 #include "chrome/browser/ui/webui/bookmarks/bookmark_prefs.h"
 #include "chrome/browser/ui/webui/flags/flags_ui.h"
@@ -144,7 +147,6 @@
 #include "components/performance_manager/public/user_tuning/prefs.h"
 #include "components/permissions/permission_hats_trigger_helper.h"
 #include "components/permissions/pref_names.h"
-#include "components/plus_addresses/plus_address_prefs.h"
 #include "components/policy/core/browser/browser_policy_connector.h"
 #include "components/policy/core/browser/url_blocklist_manager.h"
 #include "components/policy/core/common/local_test_policy_provider.h"
@@ -280,6 +282,8 @@
 #include "chrome/browser/new_tab_page/modules/photos/photos_service.h"
 #include "chrome/browser/new_tab_page/modules/recipes/recipes_service.h"
 #include "chrome/browser/new_tab_page/modules/safe_browsing/safe_browsing_handler.h"
+#include "chrome/browser/new_tab_page/modules/v2/calendar/google_calendar_page_handler.h"
+#include "chrome/browser/new_tab_page/modules/v2/most_relevant_tab_resumption/most_relevant_tab_resumption_page_handler.h"
 #include "chrome/browser/new_tab_page/modules/v2/tab_resumption/tab_resumption_page_handler.h"
 #include "chrome/browser/new_tab_page/promos/promo_service.h"
 #include "chrome/browser/policy/developer_tools_policy_handler.h"
@@ -288,10 +292,8 @@
 #include "chrome/browser/serial/serial_policy_allowed_ports.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/commerce/commerce_ui_tab_helper.h"
-#include "chrome/browser/ui/lens/lens_overlay_permission_utils.h"
 #include "chrome/browser/ui/safety_hub/safety_hub_prefs.h"
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
-#include "chrome/browser/ui/tabs/saved_tab_groups/saved_tab_group_utils.h"
 #include "chrome/browser/ui/webui/cr_components/theme_color_picker/theme_color_picker_handler.h"
 #include "chrome/browser/ui/webui/history/foreign_session_handler.h"
 #include "chrome/browser/ui/webui/new_tab_page/new_tab_page_handler.h"
@@ -299,9 +301,9 @@
 #include "chrome/browser/ui/webui/settings/settings_ui.h"
 #include "chrome/browser/ui/webui/side_panel/read_anything/read_anything_prefs.h"
 #include "chrome/browser/ui/webui/tab_search/tab_search_prefs.h"
-#include "chrome/browser/ui/webui/whats_new/whats_new_ui.h"
 #include "chrome/browser/upgrade_detector/upgrade_detector.h"
 #include "components/headless/policy/headless_mode_prefs.h"
+#include "components/lens/lens_overlay_permission_utils.h"
 #include "components/live_caption/live_caption_controller.h"
 #include "components/live_caption/live_translate_controller.h"
 #include "components/ntp_tiles/custom_links_manager_impl.h"
@@ -344,7 +346,6 @@
 #include "chrome/browser/ash/account_manager/account_manager_edu_coexistence_controller.h"
 #include "chrome/browser/ash/app_list/app_list_syncable_service.h"
 #include "chrome/browser/ash/app_list/arc/arc_app_list_prefs.h"
-#include "chrome/browser/ash/app_mode/arc/arc_kiosk_app_manager.h"
 #include "chrome/browser/ash/app_mode/kiosk_chrome_app_manager.h"
 #include "chrome/browser/ash/app_mode/kiosk_cryptohome_remover.h"
 #include "chrome/browser/ash/app_mode/kiosk_system_session.h"
@@ -471,11 +472,9 @@
 #endif
 
 #if BUILDFLAG(IS_WIN)
-#include "chrome/browser/enterprise/platform_auth/platform_auth_policy_observer.h"
 #include "chrome/browser/font_prewarmer_tab_helper.h"
 #include "chrome/browser/media/cdm_pref_service_helper.h"
 #include "chrome/browser/media/media_foundation_service_monitor.h"
-#include "chrome/browser/os_crypt/app_bound_encryption_metrics_win.h"
 #include "chrome/browser/os_crypt/app_bound_encryption_provider_win.h"
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
 #include "chrome/browser/win/conflicts/incompatible_applications_updater.h"
@@ -485,6 +484,7 @@
 #endif  // BUILDFLAG(IS_WIN)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
+#include "chrome/browser/enterprise/platform_auth/platform_auth_policy_observer.h"
 #include "components/os_crypt/sync/os_crypt.h"
 #endif
 
@@ -995,6 +995,9 @@ constexpr char kOsCryptAppBoundFixedDataPrefName[] =
 // Deprecated 03/2024
 constexpr char kOsCryptAppBoundFixedData2PrefName[] =
     "os_crypt.app_bound_fixed_data2";
+// Deprecated 06/2024
+constexpr char kOsCryptAppBoundFixedData3PrefName[] =
+    "os_crypt.app_bound_fixed_data3";
 #endif  // BUILDFLAG(IS_WIN)
 
 // Deprecated 02/2024.
@@ -1059,6 +1062,7 @@ constexpr char kGlanceablesEnabled[] = "ash.glanceables_enabled";
 // Deprecated 05/2024.
 // A preference to keep track of the device registered time.
 constexpr char kDeviceRegisteredTime[] = "DeviceRegisteredTime";
+constexpr char kArcKioskDictionaryName[] = "arc-kiosk";
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 #if !BUILDFLAG(IS_ANDROID)
@@ -1081,12 +1085,58 @@ inline constexpr char kHasShownRefreshWhatsNew[] =
 // keyboard shortcut.
 inline constexpr char kAccessibilityMouseKeysShortcutToPauseEnabled[] =
     "settings.a11y.mouse_keys.ctrl_to_pause_enabled";
+// A boolean pref which determines if mouse keys is automatically disabled in
+// text fields.
+inline constexpr char kAccessibilityMouseKeysDisableInTextFields[] =
+    "settings.a11y.mouse_keys.disable_in_text_fields";
+// A boolean pref which determines whether screen magnifier should center
+// the text input focus.
+inline constexpr char kAccessibilityScreenMagnifierCenterFocus[] =
+    "settings.a11y.screen_magnifier_center_focus";
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
+// Deprecated 05/2024.
+constexpr char kBlockTruncatedCookies[] = "profile.cookie_block_truncated";
+
+// Deprecated 05/2024
+inline constexpr char kDefaultSearchProviderChoiceLocationPrefName[] =
+    "default_search_provider_data.choice_location";
+
 // Deprecated 05/2024.
 inline constexpr char kSyncCachedTrustedVaultAutoUpgradeDebugInfo[] =
     "sync.cached_trusted_vault_auto_upgrade_debug_info";
 
+// Deprecated 05/2024.
+inline constexpr char kAutologinEnabled[] = "autologin.enabled";
+inline constexpr char kReverseAutologinRejectedEmailList[] =
+    "reverse_autologin.rejected_email_list";
+
+// Deprecated 06/2024.
+inline constexpr char kTrackingProtectionOnboardingNoticeFirstRequested[] =
+    "tracking_protection.tracking_protection_onboarding_notice_first_requested";
+inline constexpr char kTrackingProtectionOnboardingNoticeLastRequested[] =
+    "tracking_protection.tracking_protection_onboarding_notice_last_requested";
+
+// Deprecated 06/2024.
+#if !BUILDFLAG(IS_ANDROID)
+inline constexpr char kAccessibilityReadAnythingOmniboxIconLabelShownCount[] =
+    "settings.a11y.read_anything.omnibox_icon_label_shown_count";
+#endif
+
+// Deprecated 06/2024.
+#if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
+inline constexpr char kAccessibilityPdfOcrAlwaysActive[] =
+    "settings.a11y.pdf_ocr_always_active";
+#endif
+
+// Deprecated 06/2024.
+inline constexpr char kTrackingProtectionOffboarded[] =
+    "tracking_protection.tracking_protection_offboarded";
+inline constexpr char kTrackingProtectionOffboardedSince[] =
+    "tracking_protection.tracking_protection_offboarded_since";
+inline constexpr char kTrackingProtectionOffboardingAckAction[] =
+    "tracking_protection.tracking_protection_offboarding_ack_action";
+
 // Register local state used only for migration (clearing or moving to a new
 // key).
 void RegisterLocalStatePrefsForMigration(PrefRegistrySimple* registry) {
@@ -1200,6 +1250,9 @@ void RegisterLocalStatePrefsForMigration(PrefRegistrySimple* registry) {
   // Deprecated 03/2024.
   registry->RegisterStringPref(kOsCryptAppBoundFixedData2PrefName,
                                std::string());
+  // Deprecated 06/2024.
+  registry->RegisterStringPref(kOsCryptAppBoundFixedData3PrefName,
+                               std::string());
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
@@ -1208,6 +1261,7 @@ void RegisterLocalStatePrefsForMigration(PrefRegistrySimple* registry) {
 
   // Deprecated 05/2024.
   registry->RegisterTimePref(kDeviceRegisteredTime, base::Time());
+  registry->RegisterDictionaryPref(kArcKioskDictionaryName);
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 // Deprecated 04/2024.
@@ -1556,10 +1610,47 @@ void RegisterProfilePrefsForMigration(
   // Deprecated 05/2024.
   registry->RegisterBooleanPref(kAccessibilityMouseKeysShortcutToPauseEnabled,
                                 true);
+  registry->RegisterBooleanPref(kAccessibilityMouseKeysDisableInTextFields,
+                                true);
+  registry->RegisterBooleanPref(kAccessibilityScreenMagnifierCenterFocus, true);
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
+  // Deprecated 05/2024.
+  registry->RegisterBooleanPref(kBlockTruncatedCookies, true);
+
+  // Deprecated 05/2024
+  registry->RegisterIntegerPref(
+      kDefaultSearchProviderChoiceLocationPrefName,
+      static_cast<int>(search_engines::ChoiceMadeLocation::kOther));
+
   // Deprecated 05/2024.
   registry->RegisterStringPref(kSyncCachedTrustedVaultAutoUpgradeDebugInfo, "");
+
+  // Deprecated 05/2024.
+  registry->RegisterBooleanPref(kAutologinEnabled, true);
+  registry->RegisterListPref(kReverseAutologinRejectedEmailList);
+
+  // Deprecated 06/2024.
+  registry->RegisterTimePref(kTrackingProtectionOnboardingNoticeFirstRequested,
+                             base::Time());
+  registry->RegisterTimePref(kTrackingProtectionOnboardingNoticeLastRequested,
+                             base::Time());
+
+// Deprecated 06/2024.
+#if !BUILDFLAG(IS_ANDROID)
+  registry->RegisterIntegerPref(
+      kAccessibilityReadAnythingOmniboxIconLabelShownCount, 0);
+#endif
+
+// Deprecated 06/2024.
+#if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
+  registry->RegisterBooleanPref(kAccessibilityPdfOcrAlwaysActive, true);
+#endif
+
+  // Deprecated 06/2024.
+  registry->RegisterBooleanPref(kTrackingProtectionOffboarded, false);
+  registry->RegisterTimePref(kTrackingProtectionOffboardedSince, base::Time());
+  registry->RegisterIntegerPref(kTrackingProtectionOffboardingAckAction, 0);
 }
 
 void ClearSyncRequestedPrefAndMaybeMigrate(PrefService* profile_prefs) {
@@ -1619,6 +1710,7 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
   metrics::RegisterDemographicsLocalStatePrefs(registry);
   network_time::NetworkTimeTracker::RegisterPrefs(registry);
   optimization_guide::prefs::RegisterLocalStatePrefs(registry);
+  optimization_guide::model_execution::prefs::RegisterLocalStatePrefs(registry);
   password_manager::PasswordManager::RegisterLocalPrefs(registry);
   policy::BrowserPolicyConnector::RegisterPrefs(registry);
   policy::LocalTestPolicyProvider::RegisterLocalStatePrefs(registry);
@@ -1690,12 +1782,13 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
   media_router::RegisterLocalStatePrefs(registry);
   metrics::TabStatsTracker::RegisterPrefs(registry);
   performance_manager::user_tuning::prefs::RegisterLocalStatePrefs(registry);
+  PerformanceInterventionMetricsReporter::RegisterLocalStatePrefs(registry);
   RegisterBrowserPrefs(registry);
   speech::SodaInstaller::RegisterLocalStatePrefs(registry);
   StartupBrowserCreator::RegisterLocalStatePrefs(registry);
   task_manager::TaskManagerInterface::RegisterPrefs(registry);
   UpgradeDetector::RegisterPrefs(registry);
-  WhatsNewUI::RegisterLocalStatePrefs(registry);
+  registry->RegisterIntegerPref(prefs::kLastWhatsNewVersion, 0);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 #if BUILDFLAG(IS_CHROMEOS_LACROS) || BUILDFLAG(ENABLE_DICE_SUPPORT)
@@ -1705,7 +1798,6 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   arc::prefs::RegisterLocalStatePrefs(registry);
   ChromeOSMetricsProvider::RegisterPrefs(registry);
-  ash::ArcKioskAppManager::RegisterPrefs(registry);
   ash::AudioDevicesPrefHandlerImpl::RegisterPrefs(registry);
   ash::carrier_lock::CarrierLockManager::RegisterLocalPrefs(registry);
   ash::cert_provisioning::RegisterLocalStatePrefs(registry);
@@ -1813,12 +1905,12 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
   registry->RegisterBooleanPref(prefs::kRendererAppContainerEnabled, true);
   registry->RegisterBooleanPref(prefs::kBlockBrowserLegacyExtensionPoints,
                                 true);
+  registry->RegisterIntegerPref(prefs::kDynamicCodeSettings, /*Default=*/0);
   registry->RegisterBooleanPref(prefs::kApplicationBoundEncryptionEnabled,
                                 true);
   registry->RegisterBooleanPref(
       policy::policy_prefs::kNativeWindowOcclusionEnabled, true);
   MediaFoundationServiceMonitor::RegisterPrefs(registry);
-  os_crypt::RegisterLocalStatePrefs(registry);
   os_crypt_async::AppBoundEncryptionProviderWin::RegisterLocalPrefs(registry);
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
   IncompatibleApplicationsUpdater::RegisterLocalStatePrefs(registry);
@@ -1843,9 +1935,9 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
   screen_ai::RegisterLocalStatePrefs(registry);
 #endif  // BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
 
-#if BUILDFLAG(IS_WIN)
+#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
   PlatformAuthPolicyObserver::RegisterPrefs(registry);
-#endif  // BUILDFLAG(IS_WIN)
+#endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
 
   // Platform-specific and compile-time conditional individual preferences.
   // If you have multiple preferences that should clearly be grouped together,
@@ -1927,7 +2019,6 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
   permissions::RegisterProfilePrefs(registry);
   PermissionBubbleMediaAccessHandler::RegisterProfilePrefs(registry);
   PlatformNotificationServiceImpl::RegisterProfilePrefs(registry);
-  plus_addresses::RegisterProfilePrefs(registry);
   policy::URLBlocklistManager::RegisterProfilePrefs(registry);
   PolicyUI::RegisterProfilePrefs(registry);
   PrefProxyConfigTrackerImpl::RegisterProfilePrefs(registry);
@@ -2052,6 +2143,7 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
   extensions::TabsCaptureVisibleTabFunction::RegisterProfilePrefs(registry);
   first_run::RegisterProfilePrefs(registry);
   gcm::RegisterProfilePrefs(registry);
+  GoogleCalendarPageHandler::RegisterProfilePrefs(registry);
   HatsServiceDesktop::RegisterProfilePrefs(registry);
   lens::prefs::RegisterProfilePrefs(registry);
   NtpCustomBackgroundService::RegisterProfilePrefs(registry);
@@ -2073,13 +2165,14 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
   signin::RegisterProfilePrefs(registry);
   StartupBrowserCreator::RegisterProfilePrefs(registry);
   TabResumptionPageHandler::RegisterProfilePrefs(registry);
+  MostRelevantTabResumptionPageHandler::RegisterProfilePrefs(registry);
+  tab_groups::saved_tab_groups::prefs::RegisterProfilePrefs(registry);
   tab_organization_prefs::RegisterProfilePrefs(registry);
   tab_search_prefs::RegisterProfilePrefs(registry);
   ThemeColorPickerHandler::RegisterProfilePrefs(registry);
   toolbar::RegisterProfilePrefs(registry);
   UnifiedAutoplayConfig::RegisterProfilePrefs(registry);
   user_notes::RegisterProfilePrefs(registry);
-  tab_groups::SavedTabGroupUtils::RegisterProfilePrefs(registry);
 
 #if !BUILDFLAG(IS_CHROMEOS_LACROS)
   captions::LiveCaptionController::RegisterProfilePrefs(registry);
@@ -2110,6 +2203,9 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
   registry->RegisterBooleanPref(policy::policy_prefs::kFloatingWorkspaceEnabled,
                                 false);
   ::reporting::RegisterProfilePrefs(registry);
+  registry->RegisterBooleanPref(prefs::kFloatingSsoEnabled, false);
+  registry->RegisterListPref(prefs::kFloatingSsoDomainBlocklist);
+  registry->RegisterListPref(prefs::kFloatingSsoDomainBlocklistExceptions);
 #if BUILDFLAG(USE_CUPS)
   extensions::PrintingAPIHandler::RegisterProfilePrefs(registry);
 #endif  // BUILDFLAG(USE_CUPS)
@@ -2255,7 +2351,9 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
       webauthn::pref_names::kEnclaveFailedPINAttemptsCount, 0);
 
   side_panel_prefs::RegisterProfilePrefs(registry);
-#endif
+
+  tabs::RegisterProfilePrefs(registry);
+#endif  // !BUILDFLAG(IS_ANDROID)
 
   registry->RegisterBooleanPref(webauthn::pref_names::kAllowWithBrokenCerts,
                                 false);
@@ -2276,14 +2374,15 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
 #endif
 
 #if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
-  registry->RegisterBooleanPref(prefs::kAccessibilityPdfOcrAlwaysActive, true);
+  registry->RegisterBooleanPref(
+      prefs::kAccessibilityMainNodeAnnotationsEnabled, false,
+      user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 #endif  // BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   registry->RegisterBooleanPref(kClearUserDataDir1Pref, false);
 #endif
 
-  registry->RegisterBooleanPref(prefs::kBlockTruncatedCookies, true);
   registry->RegisterBooleanPref(
       prefs::kManagedPrivateNetworkAccessRestrictionsEnabled, false);
 
@@ -2306,15 +2405,6 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry,
   registry->RegisterIntegerPref(prefs::kChromeDataRegionSetting, 0);
 #endif
 
-  registry->RegisterBooleanPref(prefs::kTabGroupsDeletionSkipDialogOnDelete,
-                                false);
-  registry->RegisterBooleanPref(prefs::kTabGroupsDeletionSkipDialogOnUngroup,
-                                false);
-  registry->RegisterBooleanPref(prefs::kTabGroupsDeletionSkipDialogOnRemoveTab,
-                                false);
-  registry->RegisterBooleanPref(prefs::kTabGroupsDeletionSkipDialogOnCloseTab,
-                                false);
-
   registry->RegisterIntegerPref(prefs::kLensOverlayStartCount, 0);
 }
 
@@ -2467,6 +2557,8 @@ void MigrateObsoleteLocalStatePrefs(PrefService* local_state) {
   local_state->ClearPref(kOsCryptAppBoundFixedDataPrefName);
   // Deprecated 03/2024.
   local_state->ClearPref(kOsCryptAppBoundFixedData2PrefName);
+  // Deprecated 06/2024.
+  local_state->ClearPref(kOsCryptAppBoundFixedData3PrefName);
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
@@ -2475,6 +2567,7 @@ void MigrateObsoleteLocalStatePrefs(PrefService* local_state) {
 
   // Added 05/2024.
   local_state->ClearPref(kDeviceRegisteredTime);
+  local_state->ClearPref(kArcKioskDictionaryName);
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 // Added 04/2024 .
@@ -2923,11 +3016,48 @@ void MigrateObsoleteProfilePrefs(PrefService* profile_prefs,
 
   // Added 05/2024.
   profile_prefs->ClearPref(kAccessibilityMouseKeysShortcutToPauseEnabled);
+  profile_prefs->ClearPref(kAccessibilityMouseKeysDisableInTextFields);
+  profile_prefs->ClearPref(kAccessibilityScreenMagnifierCenterFocus);
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
+  // Added 05/2024.
+  profile_prefs->ClearPref(kBlockTruncatedCookies);
+
+  // Added 05/2024
+  profile_prefs->ClearPref(kDefaultSearchProviderChoiceLocationPrefName);
+
   // Added 05/2024.
   profile_prefs->ClearPref(kSyncCachedTrustedVaultAutoUpgradeDebugInfo);
 
+  // Added 05/2024.
+  profile_prefs->ClearPref(kAutologinEnabled);
+  profile_prefs->ClearPref(kReverseAutologinRejectedEmailList);
+
+  // Added 06/2024.
+  profile_prefs->ClearPref(kTrackingProtectionOnboardingNoticeFirstRequested);
+  profile_prefs->ClearPref(kTrackingProtectionOnboardingNoticeLastRequested);
+
+  // Added 06/2024.
+#if !BUILDFLAG(IS_ANDROID)
+  profile_prefs->ClearPref(
+      kAccessibilityReadAnythingOmniboxIconLabelShownCount);
+#endif
+
+// Added 06/2024.
+#if BUILDFLAG(ENABLE_SCREEN_AI_SERVICE)
+  profile_prefs->ClearPref(kAccessibilityPdfOcrAlwaysActive);
+#endif
+
+  // Added 06/2024.
+  profile_prefs->ClearPref(kTrackingProtectionOffboarded);
+  profile_prefs->ClearPref(kTrackingProtectionOffboardedSince);
+  profile_prefs->ClearPref(kTrackingProtectionOffboardingAckAction);
+
+#if !BUILDFLAG(IS_ANDROID)
+  // Added 06/2024.
+  syncer::SyncPrefs::MaybeMigratePasswordsToPerAccountPref(profile_prefs);
+#endif  // !BUILDFLAG(IS_ANDROID)
+
   // Please don't delete the following line. It is used by PRESUBMIT.py.
   // END_MIGRATE_OBSOLETE_PROFILE_PREFS
 
diff --git a/tools/under-control/src/chrome/browser/ui/tab_helpers.cc b/tools/under-control/src/chrome/browser/ui/tab_helpers.cc
index 796441c10..7398027d5 100755
--- a/tools/under-control/src/chrome/browser/ui/tab_helpers.cc
+++ b/tools/under-control/src/chrome/browser/ui/tab_helpers.cc
@@ -28,11 +28,13 @@
 #include "chrome/browser/content_settings/sound_content_setting_observer.h"
 #include "chrome/browser/dips/dips_bounce_detector.h"
 #include "chrome/browser/dips/dips_service.h"
+#include "chrome/browser/enterprise/data_protection/data_protection_navigation_controller.h"
 #include "chrome/browser/external_protocol/external_protocol_observer.h"
 #include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/file_system_access/file_system_access_features.h"
 #include "chrome/browser/file_system_access/file_system_access_permission_request_manager.h"
 #include "chrome/browser/file_system_access/file_system_access_tab_helper.h"
+#include "chrome/browser/fingerprinting_protection/chrome_fingerprinting_protection_web_contents_helper_factory.h"
 #include "chrome/browser/history/history_tab_helper.h"
 #include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/history_clusters/history_clusters_tab_helper.h"
@@ -102,12 +104,11 @@
 #include "chrome/browser/ui/safety_hub/unused_site_permissions_service.h"
 #include "chrome/browser/ui/safety_hub/unused_site_permissions_service_factory.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
-#include "chrome/browser/ui/side_panel/companion/companion_utils.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_dialogs.h"
 #include "chrome/browser/ui/tab_ui_helper.h"
 #include "chrome/browser/ui/thumbnails/thumbnail_tab_helper.h"
-#include "chrome/browser/user_notes/user_notes_tab_helper.h"
+#include "chrome/browser/ui/views/side_panel/companion/companion_utils.h"
 #include "chrome/browser/v8_compile_hints/v8_compile_hints_tab_helper.h"
 #include "chrome/browser/vr/vr_tab_helper.h"
 #include "chrome/common/buildflags.h"
@@ -130,9 +131,9 @@
 #include "components/dom_distiller/core/dom_distiller_features.h"
 #include "components/download/content/factory/navigation_monitor_factory.h"
 #include "components/download/content/public/download_navigation_observer.h"
+#include "components/enterprise/buildflags/buildflags.h"
 #include "components/feed/buildflags.h"
 #include "components/fingerprinting_protection_filter/browser/fingerprinting_protection_filter_features.h"
-#include "components/fingerprinting_protection_filter/browser/fingerprinting_protection_web_contents_helper.h"
 #include "components/history/content/browser/web_contents_top_sites_observer.h"
 #include "components/history/core/browser/top_sites.h"
 #include "components/infobars/content/content_infobar_manager.h"
@@ -149,6 +150,7 @@
 #include "components/permissions/features.h"
 #include "components/permissions/permission_recovery_success_rate_tracker.h"
 #include "components/permissions/permission_request_manager.h"
+#include "components/safe_browsing/content/browser/async_check_tracker.h"
 #include "components/safe_browsing/content/browser/safe_browsing_navigation_observer.h"
 #include "components/safe_browsing/content/browser/safe_browsing_tab_observer.h"
 #include "components/safe_browsing/core/common/features.h"
@@ -200,12 +202,12 @@
 #include "chrome/browser/ui/sad_tab_helper.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/search_engine_choice/search_engine_choice_tab_helper.h"
-#include "chrome/browser/ui/side_panel/companion/companion_tab_helper.h"
-#include "chrome/browser/ui/side_panel/companion/exps_registration_success_observer.h"
-#include "chrome/browser/ui/side_panel/customize_chrome/customize_chrome_tab_helper.h"
-#include "chrome/browser/ui/side_panel/customize_chrome/customize_chrome_utils.h"
-#include "chrome/browser/ui/side_panel/history_clusters/history_clusters_tab_helper.h"
-#include "chrome/browser/ui/side_panel/read_anything/read_anything_tab_helper.h"
+#include "chrome/browser/ui/views/side_panel/companion/companion_tab_helper.h"
+#include "chrome/browser/ui/views/side_panel/companion/exps_registration_success_observer.h"
+#include "chrome/browser/ui/views/side_panel/customize_chrome/customize_chrome_tab_helper.h"
+#include "chrome/browser/ui/views/side_panel/customize_chrome/customize_chrome_utils.h"
+#include "chrome/browser/ui/views/side_panel/history_clusters/history_clusters_tab_helper.h"
+#include "chrome/browser/ui/views/side_panel/read_anything/read_anything_tab_helper.h"
 #include "chrome/browser/ui/sync/browser_synced_tab_delegate.h"
 #include "chrome/browser/ui/ui_features.h"
 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
@@ -406,10 +408,10 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   FindBarState::ConfigureWebContents(web_contents);
   if (base::FeatureList::IsEnabled(fingerprinting_protection_filter::features::
                                        kEnableFingerprintingProtectionFilter)) {
-    fingerprinting_protection_filter::
-        FingerprintingProtectionWebContentsHelper::CreateForWebContents(
-            web_contents, profile->GetPrefs(),
-            TrackingProtectionSettingsFactory::GetForProfile(profile));
+    // TODO(https://crbug.com/40280666): Move this to TabFeatures.
+    CreateFingerprintingProtectionWebContentsHelper(
+        web_contents, profile->GetPrefs(),
+        TrackingProtectionSettingsFactory::GetForProfile(profile));
   }
   download::DownloadNavigationObserver::CreateForWebContents(
       web_contents,
@@ -512,6 +514,16 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
         web_contents,
         safe_browsing::TailoredSecurityServiceFactory::GetForProfile(profile));
   }
+  if (base::FeatureList::IsEnabled(
+          safe_browsing::kSafeBrowsingAsyncRealTimeCheck) &&
+      g_browser_process->safe_browsing_service()) {
+    safe_browsing::AsyncCheckTracker::CreateForWebContents(
+        web_contents, g_browser_process->safe_browsing_service()->ui_manager());
+  }
+  // SafeBrowsingTabObserver creates a ClientSideDetectionHost, which observes
+  // events from PermissionRequestManager and AsyncCheckTracker in its
+  // constructor. Therefore, PermissionRequestManager and AsyncCheckTracker need
+  // to be created before SafeBrowsingTabObserver is created.
   safe_browsing::SafeBrowsingTabObserver::CreateForWebContents(
       web_contents,
       std::make_unique<safe_browsing::ChromeSafeBrowsingTabObserverDelegate>());
@@ -545,6 +557,21 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
       web_contents);
   tpcd::trial::ValidityService::MaybeCreateForWebContents(web_contents);
   TrustedVaultEncryptionKeysTabHelper::CreateForWebContents(web_contents);
+#if BUILDFLAG(IS_ANDROID)
+  if (base::FeatureList::IsEnabled(features::kSafetyHub)) {
+    auto* service = UnusedSitePermissionsServiceFactory::GetForProfile(profile);
+    if (service) {
+      UnusedSitePermissionsService::TabHelper::CreateForWebContents(
+          web_contents, service);
+    }
+  }
+#else   // BUILDFLAG(IS_ANDROID)
+  auto* service = UnusedSitePermissionsServiceFactory::GetForProfile(profile);
+  if (service) {
+    UnusedSitePermissionsService::TabHelper::CreateForWebContents(web_contents,
+                                                                  service);
+  }
+#endif  // BUILDFLAG(IS_ANDROID)
   ukm::InitializeSourceUrlRecorderForWebContents(web_contents);
   v8_compile_hints::V8CompileHintsTabHelper::MaybeCreateForWebContents(
       web_contents);
@@ -601,6 +628,10 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   FormInteractionTabHelper::CreateForWebContents(web_contents);
   FramebustBlockTabHelper::CreateForWebContents(web_contents);
   IntentPickerTabHelper::CreateForWebContents(web_contents);
+#if BUILDFLAG(ENTERPRISE_WATERMARK)
+  enterprise_data_protection::DataProtectionNavigationController::
+      MaybeCreateForWebContents(web_contents);
+#endif
   javascript_dialogs::TabModalDialogManager::CreateForWebContents(
       web_contents,
       std::make_unique<JavaScriptTabModalDialogManagerDelegateDesktop>(
@@ -638,19 +669,13 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   if (commerce::isContextualConsentEnabled()) {
     commerce_hint::CommerceHintTabHelper::CreateForWebContents(web_contents);
   }
-  auto* service = UnusedSitePermissionsServiceFactory::GetForProfile(profile);
-  if (service) {
-    UnusedSitePermissionsService::TabHelper::CreateForWebContents(web_contents,
-                                                                  service);
-  }
   if (base::FeatureList::IsEnabled(ntp_features::kNtpHistoryClustersModule)) {
     side_panel::HistoryClustersTabHelper::CreateForWebContents(web_contents);
   }
   if (companion::IsCompanionFeatureEnabled()) {
     companion::CompanionTabHelper::CreateForWebContents(web_contents);
   }
-  if (features::IsReadAnythingEnabled() &&
-      features::IsReadAnythingLocalSidePanelEnabled()) {
+  if (features::IsReadAnythingLocalSidePanelEnabled()) {
     ReadAnythingTabHelper::CreateForWebContents(web_contents);
   }
   if (base::FeatureList::IsEnabled(
@@ -720,9 +745,6 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
     HatsHelper::CreateForWebContents(web_contents);
   }
   SharedHighlightingPromo::CreateForWebContents(web_contents);
-  if (user_notes::IsUserNotesEnabled() && !profile->IsOffTheRecord()) {
-    user_notes::UserNotesTabHelper::CreateForWebContents(web_contents);
-  }
 
   if (!profile->IsIncognitoProfile()) {
     // TODO(crbug.com/40863325): Consider using the in-memory cache instead.
diff --git a/tools/under-control/src/chrome/common/extensions/api/autofill_private.idl b/tools/under-control/src/chrome/common/extensions/api/autofill_private.idl
index 62d3dcd66..02b0a6dba 100755
--- a/tools/under-control/src/chrome/common/extensions/api/autofill_private.idl
+++ b/tools/under-control/src/chrome/common/extensions/api/autofill_private.idl
@@ -372,9 +372,6 @@ namespace autofillPrivate {
     // Logs that the server cards edit link was clicked.
     static void logServerCardLinkClicked();
 
-    // Enables or disables FIDO Authentication for credit card unmasking.
-    static void setCreditCardFIDOAuthEnabledState(boolean enabled);
-
     // Enrolls a credit card into virtual cards.
     // |cardId|: The server side id of the credit card to be enrolled. Note it
     // refers to the legacy server id of credit cards, not the instrument ids.
diff --git a/tools/under-control/src/chrome/common/extensions/api/autotest_private.idl b/tools/under-control/src/chrome/common/extensions/api/autotest_private.idl
index 76be1b072..346abf38c 100755
--- a/tools/under-control/src/chrome/common/extensions/api/autotest_private.idl
+++ b/tools/under-control/src/chrome/common/extensions/api/autotest_private.idl
@@ -382,6 +382,7 @@ namespace autotestPrivate {
     double presentDeviation;
     double renderQuality;
     double janksPerMinute;
+    double janksPercentage;
   };
 
   callback TakeScreenshotCallback = void (DOMString base64Png);
@@ -1009,7 +1010,7 @@ namespace autotestPrivate {
         VoidCallback callback);
 
     // Launches Files app directly to absolutePath, if the path does not
-    // exist, it will launch to the default opening location (i.e. My files).
+    // exist, it will launch to the default opening location (i.e. MyFiles).
     // If the supplied path is a file (and it exists) it will open Files app
     // to the parent folder instead.
     static void launchFilesAppToPath(
diff --git a/tools/under-control/src/chrome/common/extensions/api/file_manager_private.idl b/tools/under-control/src/chrome/common/extensions/api/file_manager_private.idl
index 3ca503e1c..59fe9d97c 100755
--- a/tools/under-control/src/chrome/common/extensions/api/file_manager_private.idl
+++ b/tools/under-control/src/chrome/common/extensions/api/file_manager_private.idl
@@ -1803,7 +1803,7 @@ interface Functions {
   static void searchDriveMetadata(SearchMetadataParams searchParams,
                                   SearchDriveMetadataCallback callback);
 
-  // Search files in My Files.
+  // Search files in MyFiles.
   [nocompile, doesNotSupportPromises]
   static void searchFiles(SearchMetadataParams searchParams,
                           SearchFilesCallback callback);
diff --git a/tools/under-control/src/chrome/common/extensions/api/pdf_viewer_private.idl b/tools/under-control/src/chrome/common/extensions/api/pdf_viewer_private.idl
index 677a600c3..c3bcc770b 100755
--- a/tools/under-control/src/chrome/common/extensions/api/pdf_viewer_private.idl
+++ b/tools/under-control/src/chrome/common/extensions/api/pdf_viewer_private.idl
@@ -38,8 +38,6 @@ namespace pdfViewerPrivate {
 
   callback GetStreamInfoCallback = void(StreamInfo streamInfo);
   callback IsAllowedLocalFileAccessCallback = void(boolean result);
-  callback IsPdfOcrAlwaysActiveCallback = void(boolean result);
-  callback OnPdfOcrPrefSetCallback = void(boolean result);
   callback VoidCallback = void();
 
   interface Functions {
@@ -54,23 +52,11 @@ namespace pdfViewerPrivate {
         DOMString url,
         IsAllowedLocalFileAccessCallback callback);
 
-    // Determines if the preference for PDF OCR is set to run PDF OCR always.
-    // |callback|: Called with true if PDF OCR is set to be always active;
-    // false otherwise.
-    static void isPdfOcrAlwaysActive(
-        IsPdfOcrAlwaysActiveCallback callback);
-
     // Sets the current tab title to `title` for a full-page PDF.
     static void setPdfDocumentTitle(
         DOMString title,
         optional VoidCallback callback);
 
-    // Sets a pref value for PDF OCR.
-    // |value|: The new value of the pref.
-    // |callback|: The callback for whether the pref was set or not.
-    static void setPdfOcrPref(
-        boolean value, OnPdfOcrPrefSetCallback callback);
-
     // Sets PDF plugin attributes in the stream for this context if there is
     // one.
     static void setPdfPluginAttributes(
@@ -79,10 +65,6 @@ namespace pdfViewerPrivate {
   };
 
   interface Events {
-    // Fired when a pref value for PDF OCR has changed.
-    // |value| The pref value that changed.
-    static void onPdfOcrPrefChanged(boolean value);
-
     // Fired when the browser wants the listener to perform a save.
     // `streamUrl`: Unique ID for the instance that should perform the save.
     static void onSave(DOMString streamUrl);
diff --git a/tools/under-control/src/chrome/renderer/chrome_content_renderer_client.cc b/tools/under-control/src/chrome/renderer/chrome_content_renderer_client.cc
index 60bc3751c..a88d69d5d 100755
--- a/tools/under-control/src/chrome/renderer/chrome_content_renderer_client.cc
+++ b/tools/under-control/src/chrome/renderer/chrome_content_renderer_client.cc
@@ -108,8 +108,8 @@
 #include "components/safe_browsing/buildflags.h"
 #include "components/safe_browsing/content/renderer/threat_dom_details.h"
 #include "components/spellcheck/spellcheck_buildflags.h"
+#include "components/subresource_filter/content/renderer/safe_browsing_unverified_ruleset_dealer.h"
 #include "components/subresource_filter/content/renderer/subresource_filter_agent.h"
-#include "components/subresource_filter/content/renderer/unverified_ruleset_dealer.h"
 #include "components/subresource_filter/core/common/common_features.h"
 #include "components/variations/net/variations_http_headers.h"
 #include "components/variations/variations_switches.h"
@@ -202,7 +202,6 @@
 #endif
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
-#include "chrome/common/controlled_frame/controlled_frame.h"
 #include "chrome/common/initialize_extensions_client.h"
 #include "chrome/renderer/extensions/api/chrome_extensions_renderer_api_provider.h"
 #include "chrome/renderer/extensions/chrome_extensions_renderer_client.h"
@@ -257,10 +256,6 @@
 #include "chrome/renderer/media/chrome_key_systems.h"
 #endif
 
-#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
-#include "chrome/renderer/cco/multiline_detector.h"
-#endif
-
 using autofill::AutofillAgent;
 using autofill::PasswordAutofillAgent;
 using autofill::PasswordGenerationAgent;
@@ -389,8 +384,7 @@ ChromeContentRendererClient::ChromeContentRendererClient()
 #endif
       ) {
 #if BUILDFLAG(ENABLE_EXTENSIONS)
-  EnsureExtensionsClientInitialized(
-      controlled_frame::CreateAvailabilityCheckMap());
+  EnsureExtensionsClientInitialized();
   extensions::ExtensionsRendererClient::Set(
       ChromeExtensionsRendererClient::GetInstance());
 #endif
@@ -462,8 +456,8 @@ void ChromeContentRendererClient::RenderThreadStarted() {
     InitSpellCheck();
 #endif
 
-  subresource_filter_ruleset_dealer_ =
-      std::make_unique<subresource_filter::UnverifiedRulesetDealer>();
+  subresource_filter_ruleset_dealer_ = std::make_unique<
+      subresource_filter::SafeBrowsingUnverifiedRulesetDealer>();
 
   phishing_model_setter_ =
       std::make_unique<safe_browsing::PhishingModelSetterImpl>();
@@ -731,7 +725,7 @@ void ChromeContentRendererClient::RenderFrameCreated(
 
   // Owned by |render_frame|.
   new page_load_metrics::MetricsRenderFrameObserver(render_frame);
-  // There is no render thread, thus no UnverifiedRulesetDealer in
+  // There is no render thread, thus no SafeBrowsingUnverifiedRulesetDealer in
   // ChromeRenderViewTests.
   if (subresource_filter_ruleset_dealer_) {
     auto* subresource_filter_agent =
@@ -783,10 +777,6 @@ void ChromeContentRendererClient::RenderFrameCreated(
   }
 #endif
 
-#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
-  MultilineDetector::InstallIfNecessary(render_frame);
-#endif
-
   if (render_frame->IsMainFrame()) {
     new commerce::CommerceWebExtractor(render_frame, registry);
   }
@@ -1020,7 +1010,7 @@ WebPlugin* ChromeContentRendererClient::CreatePlugin(
     };
     switch (status) {
       case chrome::mojom::PluginStatus::kNotFound: {
-        NOTREACHED();
+        NOTREACHED_IN_MIGRATION();
         break;
       }
       case chrome::mojom::PluginStatus::kAllowed:
@@ -1328,8 +1318,9 @@ void ChromeContentRendererClient::ReportNaClAppType(
       }
     } else {
       // We found an extension that is not covered by any metric
-      NOTREACHED() << "Invalid NaCl usage in extension. Extension name: "
-                   << extension->name() << ", type: " << extension->GetType();
+      NOTREACHED_IN_MIGRATION()
+          << "Invalid NaCl usage in extension. Extension name: "
+          << extension->name() << ", type: " << extension->GetType();
     }
   }
 
@@ -1497,6 +1488,12 @@ bool ChromeContentRendererClient::IsLinkVisited(uint64_t link_hash) {
   return chrome_observer_->visited_link_reader()->IsVisited(link_hash);
 }
 
+void ChromeContentRendererClient::AddOrUpdateVisitedLinkSalt(
+    const url::Origin& origin,
+    uint64_t salt) {
+  return chrome_observer_->visited_link_reader()->AddOrUpdateSalt(origin, salt);
+}
+
 std::unique_ptr<blink::WebPrescientNetworking>
 ChromeContentRendererClient::CreatePrescientNetworking(
     content::RenderFrame* render_frame) {
diff --git a/tools/under-control/src/content/browser/web_contents/web_contents_impl.cc b/tools/under-control/src/content/browser/web_contents/web_contents_impl.cc
index eb1953c74..8033e5e15 100755
--- a/tools/under-control/src/content/browser/web_contents/web_contents_impl.cc
+++ b/tools/under-control/src/content/browser/web_contents/web_contents_impl.cc
@@ -49,6 +49,7 @@
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"
+#include "cc/input/browser_controls_offset_tags_info.h"
 #include "components/attribution_reporting/features.h"
 #include "components/download/public/common/download_stats.h"
 #include "components/url_formatter/url_formatter.h"
@@ -89,9 +90,9 @@
 #include "content/browser/preloading/prerender/prerender_new_tab_handle.h"
 #include "content/browser/renderer_host/agent_scheduling_group_host.h"
 #include "content/browser/renderer_host/cross_process_frame_connector.h"
-#include "content/browser/renderer_host/cursor_manager.h"
 #include "content/browser/renderer_host/frame_token_message_queue.h"
 #include "content/browser/renderer_host/frame_tree_node.h"
+#include "content/browser/renderer_host/input/touch_emulator_impl.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/navigation_entry_impl.h"
 #include "content/browser/renderer_host/navigation_request.h"
@@ -103,7 +104,6 @@
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_factory.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
-#include "content/browser/renderer_host/render_widget_host_input_event_router.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/browser/renderer_host/render_widget_host_view_child_frame.h"
 #include "content/browser/renderer_host/text_input_manager.h"
@@ -120,6 +120,8 @@
 #include "content/browser/webui/web_ui_impl.h"
 #include "content/common/content_switches_internal.h"
 #include "content/common/features.h"
+#include "content/common/input/cursor_manager.h"
+#include "content/common/input/render_widget_host_input_event_router.h"
 #include "content/public/browser/ax_inspect_factory.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_plugin_guest_manager.h"
@@ -238,6 +240,11 @@
 #include "content/browser/starscan_load_observer.h"
 #endif
 
+#if !BUILDFLAG(IS_ANDROID)
+#include "content/public/browser/document_picture_in_picture_window_controller.h"
+#include "content/public/browser/picture_in_picture_window_controller.h"
+#endif  // !BUILDFLAG(IS_ANDROID)
+
 namespace content {
 
 namespace {
@@ -269,6 +276,11 @@ BASE_FEATURE(kCrashOnDanglingBrowserContext,
              "CrashOnDanglingBrowserContext",
              base::FEATURE_ENABLED_BY_DEFAULT);
 
+// Kill switch for inner WebContents visibility updates.
+BASE_FEATURE(kUpdateInnerWebContentsVisibility,
+             "UpdateInnerWebContentsVisibility",
+             base::FEATURE_ENABLED_BY_DEFAULT);
+
 using LifecycleState = RenderFrameHost::LifecycleState;
 using LifecycleStateImpl = RenderFrameHostImpl::LifecycleStateImpl;
 using AttributionReportingOsRegistrar =
@@ -837,7 +849,7 @@ class WebContentsImpl::WebContentsDestructionObserver
   raw_ptr<WebContentsImpl> owner_;
 };
 
-#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
 // TODO(sreejakshetty): Make |WebContentsImpl::ColorChooserHolder| per-frame
 // instead of WebContents-owned.
 // WebContentsImpl::ColorChooserHolder -----------------------------------------
@@ -888,7 +900,7 @@ class WebContentsImpl::ColorChooserHolder : public blink::mojom::ColorChooser {
   // mojo renderer client.
   mojo::Remote<blink::mojom::ColorChooserClient> client_;
 };
-#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
 
 // WebContentsImpl::WebContentsTreeNode ----------------------------------------
 WebContentsImpl::WebContentsTreeNode::WebContentsTreeNode(
@@ -896,9 +908,7 @@ WebContentsImpl::WebContentsTreeNode::WebContentsTreeNode(
     : current_web_contents_(current_web_contents),
       outer_web_contents_(nullptr),
       outer_contents_frame_tree_node_id_(
-          FrameTreeNode::kFrameTreeNodeInvalidId),
-      focused_frame_tree_(
-          current_web_contents->GetPrimaryFrameTree().GetSafeRef()) {}
+          FrameTreeNode::kFrameTreeNodeInvalidId) {}
 
 WebContentsImpl::WebContentsTreeNode::~WebContentsTreeNode() = default;
 
@@ -956,7 +966,7 @@ WebContentsImpl::WebContentsTreeNode::DetachInnerWebContents(
     }
   }
 
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return nullptr;
 }
 
@@ -978,12 +988,17 @@ void WebContentsImpl::WebContentsTreeNode::OnFrameTreeNodeDestroyed(
   outer_web_contents_->node_.DetachInnerWebContents(current_web_contents_);
 }
 
+FrameTree* WebContentsImpl::WebContentsTreeNode::focused_frame_tree() {
+  CHECK(focused_frame_tree_);
+  return focused_frame_tree_;
+}
+
 void WebContentsImpl::WebContentsTreeNode::SetFocusedFrameTree(
     FrameTree* frame_tree) {
   OPTIONAL_TRACE_EVENT0("content", "WebContentsTreeNode::SetFocusedFrameTree");
   DCHECK(!outer_web_contents())
       << "Only the outermost WebContents tracks focus.";
-  focused_frame_tree_ = frame_tree->GetSafeRef();
+  focused_frame_tree_ = frame_tree;
 }
 
 WebContentsImpl*
@@ -1098,7 +1113,7 @@ class WebContentsOfBrowserContext : public base::SupportsUserData::Data {
             << "WebContents (for more info see https://crbug.com/1376879#c44); "
             << "creator = " << creator;
       } else {
-        NOTREACHED()
+        NOTREACHED_IN_MIGRATION()
             << "BrowserContext is getting destroyed without first closing all "
             << "WebContents (for more info see https://crbug.com/1376879#c44); "
             << "creator = " << creator;
@@ -1147,6 +1162,7 @@ WebContentsImpl::WebContentsImpl(BrowserContext* browser_context)
       delegate_(nullptr),
       render_view_host_delegate_view_(nullptr),
       opened_by_another_window_(false),
+      node_(this),
       primary_frame_tree_(browser_context,
                           this,
                           this,
@@ -1157,7 +1173,6 @@ WebContentsImpl::WebContentsImpl(BrowserContext* browser_context)
                           this,
                           this,
                           FrameTree::Type::kPrimary),
-      node_(this),
       primary_main_frame_process_status_(
           base::TERMINATION_STATUS_STILL_RUNNING),
       primary_main_frame_process_error_code_(0),
@@ -1188,6 +1203,7 @@ WebContentsImpl::WebContentsImpl(BrowserContext* browser_context)
       prerender_host_registry_(std::make_unique<PrerenderHostRegistry>(*this)) {
   TRACE_EVENT0("content", "WebContentsImpl::WebContentsImpl");
   WebContentsOfBrowserContext::Attach(*this);
+  node_.SetFocusedFrameTree(&primary_frame_tree_);
 #if BUILDFLAG(ENABLE_PPAPI)
   pepper_playback_observer_ = std::make_unique<PepperPlaybackObserver>(this);
 #endif
@@ -1254,6 +1270,8 @@ WebContentsImpl::~WebContentsImpl() {
 
   FullscreenContentsSet(GetBrowserContext())->erase(this);
 
+  touch_emulator_.reset();
+
   rwh_input_event_router_.reset();
 
   WebContentsImpl* outermost = GetOutermostWebContents();
@@ -1288,7 +1306,7 @@ WebContentsImpl::~WebContentsImpl() {
     dialog_manager_->CancelDialogs(this, /*reset_state=*/true);
   }
 
-#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
   color_chooser_holder_.reset();
 #endif
   find_request_manager_.reset();
@@ -2527,11 +2545,11 @@ bool WebContentsImpl::IsCrashed() {
     case base::TERMINATION_STATUS_STILL_RUNNING:
       return false;
     case base::TERMINATION_STATUS_MAX_ENUM:
-      NOTREACHED();
+      NOTREACHED_IN_MIGRATION();
       return false;
   }
 
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return false;
 }
 
@@ -2719,6 +2737,16 @@ WebContents::ScopedIgnoreInputEvents WebContentsImpl::IgnoreInputEvents(
             wc->web_input_event_audit_callbacks_.erase(*callback_id);
           } else {
             --wc->ignore_input_events_count_;
+            // Reset gesture detection so that we don't continue to generate new
+            // gestures from suppressed touches. These suppressed gestures would
+            // otherwise confuse the event stream validator when input is
+            // re-enabled.
+            if (wc->ignore_input_events_count_ == 0) {
+              if (auto* view = wc->GetRenderWidgetHostView()) {
+                static_cast<RenderWidgetHostViewBase*>(view)
+                    ->ResetGestureDetection();
+              }
+            }
           }
         }
       },
@@ -3141,7 +3169,7 @@ const blink::web_pref::WebPreferences WebContentsImpl::ComputeWebPreferences() {
     prefs.autoplay_policy =
         blink::mojom::AutoplayPolicy::kDocumentUserActivationRequired;
   } else {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
   }
 
   prefs.dont_send_key_events_to_javascript =
@@ -3541,6 +3569,10 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params,
 
   if (params.picture_in_picture_options.has_value()) {
     picture_in_picture_options_ = params.picture_in_picture_options;
+    if (GetOpener()) {
+      picture_in_picture_opener_ =
+          FromRenderFrameHostImpl(GetOpener())->GetWeakPtr();
+    }
   }
 
   // This is set before initializing the render manager since
@@ -3662,7 +3694,7 @@ void WebContentsImpl::OnWebContentsDestroyed(WebContentsImpl* web_contents) {
     pending_contents_.erase(iter);
     return;
   }
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
 }
 
 void WebContentsImpl::OnRenderWidgetHostDestroyed(
@@ -3822,7 +3854,7 @@ void WebContentsImpl::RenderWidgetWasResized(
 }
 
 KeyboardEventProcessingResult WebContentsImpl::PreHandleKeyboardEvent(
-    const NativeWebKeyboardEvent& event) {
+    const input::NativeWebKeyboardEvent& event) {
   OPTIONAL_TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("content.verbose"),
                         "WebContentsImpl::PreHandleKeyboardEvent");
   auto* outermost_contents = GetOutermostWebContents();
@@ -3863,7 +3895,8 @@ bool WebContentsImpl::HandleMouseEvent(const blink::WebMouseEvent& event) {
   return false;
 }
 
-bool WebContentsImpl::HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {
+bool WebContentsImpl::HandleKeyboardEvent(
+    const input::NativeWebKeyboardEvent& event) {
   OPTIONAL_TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("content.verbose"),
                         "WebContentsImpl::HandleKeyboardEvent");
   if (browser_plugin_embedder_ &&
@@ -3915,7 +3948,7 @@ RenderWidgetHostInputEventRouter* WebContentsImpl::GetInputEventRouter() {
     if (!rwh_input_event_router_.get()) {
       rwh_input_event_router_ =
           std::make_unique<RenderWidgetHostInputEventRouter>(
-              GetHostFrameSinkManager());
+              GetHostFrameSinkManager(), this);
     }
   }
   return rwh_input_event_router_.get();
@@ -4334,6 +4367,19 @@ void WebContentsImpl::UpdateVisibilityAndNotifyPageAndView(
   if (new_visibility != Visibility::VISIBLE) {
     SetVisibilityAndNotifyObservers(new_visibility);
   }
+
+  if (base::FeatureList::IsEnabled(kUpdateInnerWebContentsVisibility)) {
+    // Inner WebContents are skipped in ForEachRenderViewHost() above, which
+    // causes inner WebContents to not be notified of visibility changes.
+    //
+    // Note: An inner WebContents that is hidden within the embedder could
+    // spuriously be set to visible (e.g. if its parent is display:none), but
+    // this is ignored here for now.
+    for (WebContents* inner : GetInnerWebContents()) {
+      static_cast<WebContentsImpl*>(inner)
+          ->UpdateVisibilityAndNotifyPageAndView(new_visibility, is_activity);
+    }
+  }
 }
 
 #if BUILDFLAG(IS_ANDROID)
@@ -4462,7 +4508,7 @@ bool WebContentsImpl::RequestKeyboardLock(
                         "esc_key_locked", esc_key_locked);
   DCHECK(render_widget_host);
   if (WebContentsImpl::FromRenderWidgetHostImpl(render_widget_host) != this) {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
     return false;
   }
 
@@ -5166,12 +5212,20 @@ void WebContentsImpl::AXTreeIDForMainFrameHasChanged() {
       &WebContentsObserver::AXTreeIDForMainFrameHasChanged);
 }
 
-void WebContentsImpl::AccessibilityEventReceived(
-    const ui::AXUpdatesAndEvents& details) {
+void WebContentsImpl::ProcessAccessibilityUpdatesAndEvents(
+    ui::AXUpdatesAndEvents& details) {
   OPTIONAL_TRACE_EVENT0("content",
                         "WebContentsImpl::AccessibilityEventReceived");
+
+  // First, supply the data to consumers that won't change it.
   observers_.NotifyObservers(&WebContentsObserver::AccessibilityEventReceived,
                              details);
+
+  // Next, supply the data to consumers that may change it or who need to avoid
+  // extra copying. Note that this also includes those who will pass to mojo
+  // pipes not taking const.
+  // TODO(accessibility): add support for this. WebContentsDelegate isn't the
+  // right abstraction since it contains many other side effects.
 }
 
 void WebContentsImpl::AccessibilityLocationChangesReceived(
@@ -6155,7 +6209,7 @@ bool WebContentsImpl::GotResponseToKeyboardLockRequest(bool allowed) {
   }
   if (WebContentsImpl::FromRenderWidgetHostImpl(keyboard_lock_widget_) !=
       this) {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
     return false;
   }
   // KeyboardLock is only supported when called by the top-level browsing
@@ -6190,7 +6244,7 @@ WebContents* WebContentsImpl::GetFirstWebContentsInLiveOriginalOpenerChain() {
                     : nullptr;
 }
 
-#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
 void WebContentsImpl::DidChooseColorInColorChooser(SkColor color) {
   OPTIONAL_TRACE_EVENT1("content",
                         "WebContentsImpl::DidChooseColorInColorChooser",
@@ -6266,7 +6320,7 @@ void WebContentsImpl::Find(int request_id,
   OPTIONAL_TRACE_EVENT0("content", "WebContentsImpl::Find");
   // Cowardly refuse to search for no text.
   if (search_text.empty()) {
-    NOTREACHED();
+    NOTREACHED_IN_MIGRATION();
     return;
   }
 
@@ -6684,6 +6738,18 @@ void WebContentsImpl::NotifyNavigationStateChangedFromController(
   NotifyNavigationStateChanged(changed_flags);
 }
 
+TouchEmulator* WebContentsImpl::GetTouchEmulator(bool create_if_necessary) {
+  CHECK(rwh_input_event_router_);
+
+  if (!touch_emulator_ && create_if_necessary) {
+    touch_emulator_ = std::make_unique<TouchEmulatorImpl>(
+        rwh_input_event_router_.get(),
+        rwh_input_event_router_->last_device_scale_factor());
+  }
+
+  return touch_emulator_.get();
+}
+
 void WebContentsImpl::DidNavigateMainFramePreCommit(
     NavigationHandle* navigation_handle,
     bool navigation_is_within_page) {
@@ -6708,7 +6774,7 @@ void WebContentsImpl::DidNavigateMainFramePreCommit(
           GetBackForwardTransitionAnimationManager());
   if (animation_manager) {
     animation_manager->OnDidNavigatePrimaryMainFramePreCommit(
-        *request, frame_tree_node->render_manager()->current_frame_host(),
+        request, frame_tree_node->render_manager()->current_frame_host(),
         request->GetRenderFrameHost());
   }
 #endif
@@ -7384,7 +7450,7 @@ void WebContentsImpl::OnColorChooserFactoryReceiver(
   color_chooser_factory_receivers_.Add(this, std::move(receiver));
 }
 
-#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
 void WebContentsImpl::OpenColorChooser(
     mojo::PendingReceiver<blink::mojom::ColorChooser> chooser_receiver,
     mojo::PendingRemote<blink::mojom::ColorChooserClient> client,
@@ -7411,7 +7477,7 @@ void WebContentsImpl::OpenColorChooser(
     color_chooser_holder_.reset();
   }
 }
-#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_APPLE)
+#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
 
 #if BUILDFLAG(ENABLE_PPAPI)
 void WebContentsImpl::OnPepperInstanceCreated(RenderFrameHostImpl* source,
@@ -8492,19 +8558,6 @@ void WebContentsImpl::DidStopLoading() {
           manager->DidStopLoading();
         }
       });
-
-  // The spare renderer creation might have been delayed until the page stops
-  // loading. Notify the spare renderer manager about the page loading
-  // completion. This is a no-op if a spare rendere already exists.
-  //
-  // TODO(crbug.com/41490050): replace the implicit treatment of
-  // TimeDelta::Max() with an enum and optional TimeDelta if we decide to launch
-  // deferred spare renderer.
-  bool immediately_warmup_spare_renderer =
-      GetContentClient()->browser()->GetSpareRendererDelayForSiteURL(
-          GetURL()) == base::TimeDelta::Max();
-  RenderProcessHostImpl::NotifySpareManagerAboutRecentlyUsedSiteInstance(
-      GetSiteInstance(), /* ignore_delay */ immediately_warmup_spare_renderer);
 }
 
 void WebContentsImpl::DidChangeLoadProgressForPrimaryMainFrame() {
@@ -8957,6 +9010,34 @@ void WebContentsImpl::SetFocusedFrame(FrameTreeNode* node,
   CloseListenerManager::DidChangeFocusedFrame(this);
 }
 
+FrameTree* WebContentsImpl::GetOwnedPictureInPictureFrameTree() {
+#if !BUILDFLAG(IS_ANDROID)
+  if (has_picture_in_picture_document_) {
+    WebContents* picture_in_picture_web_contents =
+        PictureInPictureWindowController::
+            GetOrCreateDocumentPictureInPictureController(this)
+                ->GetChildWebContents();
+    if (picture_in_picture_web_contents) {
+      return &(static_cast<WebContentsImpl*>(picture_in_picture_web_contents)
+                   ->GetPrimaryFrameTree());
+    }
+  }
+#endif  // !BUILDFLAG(IS_ANDROID)
+
+  return nullptr;
+}
+
+FrameTree* WebContentsImpl::GetPictureInPictureOpenerFrameTree() {
+#if !BUILDFLAG(IS_ANDROID)
+  if (picture_in_picture_opener_) {
+    return &(static_cast<WebContentsImpl*>(picture_in_picture_opener_.get())
+                 ->GetPrimaryFrameTree());
+  }
+#endif  // !BUILDFLAG(IS_ANDROID)
+
+  return nullptr;
+}
+
 void WebContentsImpl::DidCallFocus() {
   OPTIONAL_TRACE_EVENT0("content", "WebContentsImpl::DidCallFocus");
   // Any explicit focusing of another window while this WebContents is in
@@ -9101,7 +9182,17 @@ void WebContentsImpl::FocusOwningWebContents(
   if (focused_widget != render_widget_host &&
       (!focused_widget ||
        focused_widget->delegate() != render_widget_host->delegate())) {
+#if BUILDFLAG(IS_ANDROID)
+    if (&GetPrimaryFrameTree() != GetFocusedFrameTree()) {
+      UMA_HISTOGRAM_BOOLEAN("Android.FocusChanged.FocusOwningWebContents",
+                            true);
+    }
+#endif
     SetAsFocusedWebContentsIfNecessary();
+  } else {
+#if BUILDFLAG(IS_ANDROID)
+    UMA_HISTOGRAM_BOOLEAN("Android.FocusChanged.FocusOwningWebContents", false);
+#endif
   }
 }
 
@@ -9537,7 +9628,7 @@ gfx::Size WebContentsImpl::GetSize() {
   return view_android->bounds().size();
 #elif BUILDFLAG(IS_IOS)
   // TODO(crbug.com/40254930): Implement me.
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return gfx::Size();
 #endif
 }
@@ -10244,7 +10335,7 @@ bool WebContentsImpl::IsBackForwardCacheSupported() {
   if (!GetDelegate()) {
     return false;
   }
-  return GetDelegate()->IsBackForwardCacheSupported();
+  return GetDelegate()->IsBackForwardCacheSupported(*this);
 }
 
 FrameTree* WebContentsImpl::LoadingTree() {
@@ -10626,7 +10717,7 @@ void WebContentsImpl::RenderFrameHostStateChanged(
                           dict.Add("new", new_state);
                         });
 
-#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_MAC)
+#if BUILDFLAG(IS_ANDROID)
   if (old_state == LifecycleState::kActive && !render_frame_host->GetParent()) {
     // TODO(sreejakshetty): Remove this reset when ColorChooserHolder becomes
     // per-frame.
@@ -10634,7 +10725,7 @@ void WebContentsImpl::RenderFrameHostStateChanged(
     // kActive.
     color_chooser_holder_.reset();
   }
-#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_MAC)
+#endif  // BUILDFLAG(IS_ANDROID)
 
   observers_.NotifyObservers(&WebContentsObserver::RenderFrameHostStateChanged,
                              render_frame_host, old_state, new_state);
@@ -10696,10 +10787,12 @@ void WebContentsImpl::NotifyPrimaryMainFrameProcessIsAlive() {
 void WebContentsImpl::UpdateBrowserControlsState(
     cc::BrowserControlsState constraints,
     cc::BrowserControlsState current,
-    bool animate) {
+    bool animate,
+    const std::optional<cc::BrowserControlsOffsetTagsInfo>& offset_tags_info) {
   // Browser controls should be synchronised with the scroll state. Therefore,
   // they are controlled from the renderer by the main RenderFrame(Host).
-  GetPrimaryPage().UpdateBrowserControlsState(constraints, current, animate);
+  GetPrimaryPage().UpdateBrowserControlsState(constraints, current, animate,
+                                              offset_tags_info);
 }
 
 void WebContentsImpl::SetV8CompileHints(base::ReadOnlySharedMemoryRegion data) {
@@ -10781,6 +10874,7 @@ std::unique_ptr<PrerenderHandle> WebContentsImpl::StartPrerendering(
       prerendering_url, trigger_type, embedder_histogram_suffix,
       /*target_hint=*/std::nullopt, content::Referrer(),
       /*eagerness=*/std::nullopt,
+      /*no_vary_search_expected=*/std::nullopt,
       /*initiator_origin=*/std::nullopt,
       content::ChildProcessHost::kInvalidUniqueID, GetWeakPtr(),
       /*initiator_frame_token=*/std::nullopt,
diff --git a/tools/under-control/src/content/child/runtime_features.cc b/tools/under-control/src/content/child/runtime_features.cc
index 4fe7bf2a0..8e24f32e0 100755
--- a/tools/under-control/src/content/child/runtime_features.cc
+++ b/tools/under-control/src/content/child/runtime_features.cc
@@ -169,7 +169,7 @@ void SetRuntimeFeatureFromChromiumFeature(const base::Feature& chromium_feature,
       }
       break;
     default:
-      NOTREACHED();
+      NOTREACHED_IN_MIGRATION();
   }
 }
 
@@ -389,10 +389,8 @@ void SetRuntimeFeaturesFromChromiumFeatures() {
            kSetOnlyIfOverridden},
           {"Fledge", raw_ref(features::kPrivacySandboxAdsAPIsM1Override),
            kSetOnlyIfOverridden},
-#if BUILDFLAG(USE_FONTATIONS_BACKEND)
           {"FontationsFontBackend",
            raw_ref(blink::features::kFontationsFontBackend)},
-#endif
           {"FontSrcLocalMatching", raw_ref(features::kFontSrcLocalMatching)},
           {"LegacyWindowsDWriteFontFallback",
            raw_ref(features::kLegacyWindowsDWriteFontFallback)},
@@ -476,6 +474,12 @@ void SetRuntimeFeaturesFromCommandLine(const base::CommandLine& command_line) {
       {wrf::EnableSharedWorker, switches::kDisableSharedWorkers, false},
       {wrf::EnableMutationEvents, blink::switches::kMutationEventsEnabled,
        true},
+      {wrf::EnableKeyboardFocusableScrollers,
+       blink::switches::kKeyboardFocusableScrollersEnabled, true},
+      {wrf::EnableKeyboardFocusableScrollers,
+       blink::switches::kKeyboardFocusableScrollersOptOut, false},
+      {wrf::EnableCSSCustomStateDeprecatedSyntax,
+       blink::switches::kCSSCustomStateDeprecatedSyntaxEnabled, true},
       {wrf::EnableTextFragmentIdentifiers,
        switches::kDisableScrollToTextFragment, false},
       {wrf::EnableWebAuthenticationRemoteDesktopSupport,
@@ -715,6 +719,7 @@ void ResolveInvalidConfigurations() {
   if (base::FeatureList::IsEnabled(
           features::kCookieDeprecationFacilitatedTesting)) {
     WebRuntimeFeatures::EnableFledgeMultiBid(false);
+    WebRuntimeFeatures::EnableFledgeRealTimeReporting(false);
 
     if (!base::FeatureList::IsEnabled(
             blink::features::
diff --git a/tools/under-control/src/content/public/browser/content_browser_client.cc b/tools/under-control/src/content/public/browser/content_browser_client.cc
index 62fed61bd..fe7feddd5 100755
--- a/tools/under-control/src/content/public/browser/content_browser_client.cc
+++ b/tools/under-control/src/content/public/browser/content_browser_client.cc
@@ -9,20 +9,18 @@
 #include <utility>
 
 #include "base/check.h"
-#include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/functional/callback_helpers.h"
 #include "base/no_destructor.h"
 #include "base/notreached.h"
-#include "base/strings/utf_string_conversions.h"
 #include "base/task/sequenced_task_runner.h"
 #include "base/task/thread_pool/thread_pool_instance.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "build/buildflag.h"
 #include "build/chromeos_buildflags.h"
-#include "content/browser/model_execution/mock_model_manager.h"
+#include "content/browser/ai/mock_ai_manager_impl.h"
 #include "content/public/browser/anchor_element_preconnect_delegate.h"
 #include "content/public/browser/authenticator_request_client_delegate.h"
 #include "content/public/browser/browser_context.h"
@@ -92,6 +90,7 @@
 #include "content/public/browser/tts_environment_android.h"
 #else
 #include "services/video_effects/public/mojom/video_effects_processor.mojom-forward.h"
+#include "third_party/blink/public/mojom/installedapp/related_application.mojom.h"
 #endif
 
 using AttributionReportType =
@@ -161,6 +160,11 @@ bool ContentBrowserClient::ShouldUseProcessPerSite(
   return false;
 }
 
+bool ContentBrowserClient::ShouldAllowProcessPerSiteForMultipleMainFrames(
+    BrowserContext* context) {
+  return true;
+}
+
 bool ContentBrowserClient::ShouldUseSpareRenderProcessHost(
     BrowserContext* browser_context,
     const GURL& site_url) {
@@ -628,6 +632,7 @@ bool ContentBrowserClient::IsCookieDeprecationLabelAllowedForContext(
 
 bool ContentBrowserClient::IsFullCookieAccessAllowed(
     content::BrowserContext* browser_context,
+    content::WebContents* web_contents,
     const GURL& url,
     const blink::StorageKey& storage_key) {
   return true;
@@ -644,6 +649,11 @@ GeneratedCodeCacheSettings ContentBrowserClient::GetGeneratedCodeCacheSettings(
   return GeneratedCodeCacheSettings(false, 0, base::FilePath());
 }
 
+std::string ContentBrowserClient::GetWebUIHostnameForCodeCacheMetrics(
+    const GURL& webui_url) const {
+  return std::string();
+}
+
 void ContentBrowserClient::AllowCertificateError(
     WebContents* web_contents,
     int cert_error,
@@ -948,11 +958,6 @@ std::wstring ContentBrowserClient::GetAppContainerSidForSandboxType(
       L"924012148-129201922");
 }
 
-std::string ContentBrowserClient::GetAppContainerId() {
-  return base::WideToUTF8(
-      base::CommandLine::ForCurrentProcess()->GetProgram().value());
-}
-
 bool ContentBrowserClient::IsRendererAppContainerDisabled() {
   return false;
 }
@@ -974,6 +979,10 @@ bool ContentBrowserClient::ShouldEnableAudioProcessHighPriority() {
   return false;
 }
 
+bool ContentBrowserClient::ShouldUseSkiaFontManager(const GURL& site_url) {
+  return false;
+}
+
 #endif  // BUILDFLAG(IS_WIN)
 
 std::vector<std::unique_ptr<blink::URLLoaderThrottle>>
@@ -1055,7 +1064,7 @@ void ContentBrowserClient::CreateWebSocket(
     mojo::PendingRemote<network::mojom::WebSocketHandshakeClient>
         handshake_client) {
   // NOTREACHED because WillInterceptWebSocket returns false.
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
 }
 
 void ContentBrowserClient::WillCreateWebTransport(
@@ -1202,11 +1211,6 @@ bool ContentBrowserClient::ShowPaymentHandlerWindow(
   return false;
 }
 
-bool ContentBrowserClient::CreateThreadPool(std::string_view name) {
-  base::ThreadPoolInstance::Create(name);
-  return true;
-}
-
 bool ContentBrowserClient::IsSecurityLevelAcceptableForWebAuthn(
     content::RenderFrameHost* rfh,
     const url::Origin& caller_origin) {
@@ -1522,13 +1526,15 @@ ContentBrowserClient::CreateIdentityRequestDialogController(
   return std::make_unique<IdentityRequestDialogController>();
 }
 
-void ContentBrowserClient::ShowDigitalIdentityInterstitialIfNeeded(
+ContentBrowserClient::DigitalIdentityInterstitialAbortCallback
+ContentBrowserClient::ShowDigitalIdentityInterstitialIfNeeded(
     WebContents& web_contents,
     const url::Origin& origin,
     bool is_only_requesting_age,
     DigitalIdentityInterstitialCallback callback) {
   std::move(callback).Run(
       DigitalIdentityProvider::RequestStatusForMetrics::kErrorOther);
+  return base::OnceClosure();
 }
 
 std::unique_ptr<DigitalIdentityProvider>
@@ -1720,6 +1726,7 @@ ContentBrowserClient::GetIpProtectionProxyBypassPolicy() {
 
 void ContentBrowserClient::MaybePrewarmHttpDiskCache(
     BrowserContext& browser_context,
+    const std::optional<url::Origin>& initiator_origin,
     const GURL& navigation_url) {}
 
 void ContentBrowserClient::NotifyMultiCaptureStateChanged(
@@ -1735,10 +1742,21 @@ bool ContentBrowserClient::ShouldSuppressAXLoadComplete(RenderFrameHost* rfh) {
   return false;
 }
 
-void ContentBrowserClient::BindModelManager(
+void ContentBrowserClient::BindAIManager(
     RenderFrameHost* rfh,
-    mojo::PendingReceiver<blink::mojom::ModelManager> receiver) {
-  MockModelManager::Create(rfh, std::move(receiver));
+    mojo::PendingReceiver<blink::mojom::AIManager> receiver) {
+  MockAIManagerImpl::Create(rfh, std::move(receiver));
+}
+
+#if !BUILDFLAG(IS_ANDROID)
+void ContentBrowserClient::QueryInstalledWebAppsByManifestId(
+    const GURL& frame_url,
+    const GURL& manifest_id,
+    content::BrowserContext* browser_context,
+    base::OnceCallback<void(std::optional<blink::mojom::RelatedApplication>)>
+        callback) {
+  std::move(callback).Run(std::nullopt);
 }
+#endif  // !BUILDFLAG(IS_ANDROID)
 
 }  // namespace content
diff --git a/tools/under-control/src/extensions/common/api/automation.idl b/tools/under-control/src/extensions/common/api/automation.idl
index f6bbaf2c9..707a07434 100755
--- a/tools/under-control/src/extensions/common/api/automation.idl
+++ b/tools/under-control/src/extensions/common/api/automation.idl
@@ -242,6 +242,7 @@
     // End ARIA Graphics module roles.
     // --------------------------------------------------------------
     grid,
+    gridCell,
     group,
     header,
     headerAsNonLandmark,
@@ -946,6 +947,9 @@ enum PositionType {
     // an <code>&lt;input&gt; element.
     DOMString? value;
 
+    // The HTML id for this element, if this node is an HTML element.
+    DOMString? htmlId;
+
     // The HTML tag for this element, if this node is an HTML element.
     DOMString? htmlTag;
 
diff --git a/tools/under-control/src/extensions/common/api/icon_variants.idl b/tools/under-control/src/extensions/common/api/icon_variants.idl
new file mode 100755
index 000000000..f5dfda89f
--- /dev/null
+++ b/tools/under-control/src/extensions/common/api/icon_variants.idl
@@ -0,0 +1,23 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Use `iconVariants` for icon declarations with support for color schemes.
+// In addition to these keys, a size key is allowed with a value of the file
+// path to the image.
+[generate_error_messages, nodoc] namespace iconVariants {
+  enum ColorScheme { dark, light };
+
+  [additionalProperties] dictionary IconVariant {
+    // Optional DOMString path to an icon that should be used with any possible
+    // size.
+    DOMString? any;
+
+    // Optional ColorScheme.
+    ColorScheme[]? color_schemes;
+  };
+
+  dictionary ManifestKeys {
+    IconVariant[] icon_variants;
+  };
+};
diff --git a/tools/under-control/src/gin/v8_initializer.cc b/tools/under-control/src/gin/v8_initializer.cc
index f407288fe..3b4fcd93e 100755
--- a/tools/under-control/src/gin/v8_initializer.cc
+++ b/tools/under-control/src/gin/v8_initializer.cc
@@ -117,11 +117,11 @@ const char* GetSnapshotFileName(const V8SnapshotFileType file_type) {
 #if BUILDFLAG(USE_V8_CONTEXT_SNAPSHOT)
       return kV8ContextSnapshotFileName;
 #else
-      NOTREACHED();
+      NOTREACHED_IN_MIGRATION();
       return nullptr;
 #endif
   }
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return nullptr;
 }
 
@@ -258,12 +258,6 @@ void SetFlags(IsolateHolder::ScriptMode mode,
   SetV8FlagsIfOverridden(features::kV8PerContextMarkingWorklist,
                          "--stress-per-context-marking-worklist",
                          "--no-stress-per-context-marking-worklist");
-  SetV8FlagsIfOverridden(
-      features::kV8ProfileGuidedOptimization,
-      "--profile-guided-optimization "
-      "--profile-guided-optimization-for-empty-feedback-vector",
-      "--noprofile-guided-optimization "
-      "--noprofile-guided-optimization-for-empty-feedback-vector");
   SetV8FlagsIfOverridden(features::kV8FlushEmbeddedBlobICache,
                          "--experimental-flush-embedded-blob-icache",
                          "--no-experimental-flush-embedded-blob-icache");
@@ -319,9 +313,22 @@ void SetFlags(IsolateHolder::ScriptMode mode,
                          "--no-write-protect-code-memory");
   SetV8FlagsIfOverridden(features::kV8SlowHistograms, "--slow-histograms",
                          "--no-slow-histograms");
+  SetV8FlagsIfOverridden(features::kV8SideStepTransitions,
+                         "--clone_object_sidestep_transitions",
+                         "--noclone_object_sidestep_transitions");
   SetV8FlagsIfOverridden(features::kV8SingleThreadedGCInBackground,
                          "--single-threaded-gc-in-background",
                          "--no-single-threaded-gc-in-background");
+  SetV8FlagsIfOverridden(features::kV8SingleThreadedGCInBackgroundParallelPause,
+                         "--parallel-pause-for-gc-in-background",
+                         "--no-parallel-pause-for-gc-in-background");
+  SetV8FlagsIfOverridden(
+      features::kV8SingleThreadedGCInBackgroundNoIncrementalMarking,
+      "--no-incremental-marking-for-gc-in-background",
+      "--incremental-marking-for-gc-in-background");
+  SetV8FlagsIfOverridden(features::kV8DecommitPooledPages,
+                         "--decommit-pooled-pages",
+                         "--no-decommit-pooled-pages");
 
   if (base::FeatureList::IsEnabled(features::kV8ConcurrentSparkplug)) {
     if (int max_threads = features::kV8ConcurrentSparkplugMaxThreads.Get()) {
@@ -435,9 +442,6 @@ void SetFlags(IsolateHolder::ScriptMode mode,
 
   // WebAssembly features.
 
-  SetV8FlagsIfOverridden(features::kWebAssemblyTailCall,
-                         "--experimental-wasm-return-call",
-                         "--no-experimental-wasm-return-call");
   SetV8FlagsIfOverridden(features::kWebAssemblyInlining,
                          "--experimental-wasm-inlining",
                          "--no-experimental-wasm-inlining");
diff --git a/tools/under-control/src/services/network/network_context.cc b/tools/under-control/src/services/network/network_context.cc
index aa94a653e..42d451bfe 100755
--- a/tools/under-control/src/services/network/network_context.cc
+++ b/tools/under-control/src/services/network/network_context.cc
@@ -4,6 +4,7 @@
 
 #include "services/network/network_context.h"
 
+#include <algorithm>
 #include <memory>
 #include <optional>
 #include <string>
@@ -112,6 +113,8 @@
 #include "services/network/network_service_network_delegate.h"
 #include "services/network/network_service_proxy_delegate.h"
 #include "services/network/oblivious_http_request_handler.h"
+#include "services/network/prefetch_cache.h"
+#include "services/network/prefetch_url_loader_client.h"
 #include "services/network/proxy_config_service_mojo.h"
 #include "services/network/proxy_lookup_request.h"
 #include "services/network/proxy_resolving_socket_factory_mojo.h"
@@ -120,6 +123,7 @@
 #include "services/network/public/cpp/features.h"
 #include "services/network/public/cpp/network_switches.h"
 #include "services/network/public/cpp/parsed_headers.h"
+#include "services/network/public/cpp/resource_request.h"
 #include "services/network/public/cpp/simple_host_resolver.h"
 #include "services/network/public/mojom/clear_data_filter.mojom.h"
 #include "services/network/public/mojom/cookie_encryption_provider.mojom.h"
@@ -405,6 +409,19 @@ base::RepeatingCallback<bool(const GURL&)> BuildUrlFilter(
 class NetworkContextApplicationStatusListener
     : public base::android::ApplicationStatusListener {
  public:
+  // Sets `get_callback` to be a callback that returns nullptr if the created
+  // NetworkContextApplicationStatusListener has been destroyed, and the
+  // listener itself, otherwise. It's a constructor argument to avoid needing
+  // a cast, moving this into the header, or other complexities around
+  // `app_status_listeners_` being a vector of the parent class.
+  explicit NetworkContextApplicationStatusListener(
+      disk_cache::ApplicationStatusListenerGetter& get_callback) {
+    get_callback =
+        base::BindRepeating(&NetworkContextApplicationStatusListener::
+                                ReturnAppStatusListenerIfAlive,
+                            weak_ptr_factory_.GetWeakPtr());
+  }
+
   // base::android::ApplicationStatusListener implementation:
   void SetCallback(const ApplicationStateChangeCallback& callback) override {
     DCHECK(!callback_);
@@ -418,18 +435,17 @@ class NetworkContextApplicationStatusListener
   }
 
  private:
+  static base::android::ApplicationStatusListener*
+  ReturnAppStatusListenerIfAlive(
+      base::WeakPtr<base::android::ApplicationStatusListener> listener) {
+    return listener.get();
+  }
+
   ApplicationStateChangeCallback callback_;
+  base::WeakPtrFactory<base::android::ApplicationStatusListener>
+      weak_ptr_factory_{this};
 };
 
-base::android::ApplicationStatusListener* ReturnAppStatusListenerIfAlive(
-    base::WeakPtr<NetworkContext> network_context,
-    base::android::ApplicationStatusListener* listener) {
-  if (!network_context) {
-    return nullptr;
-  }
-  return listener;
-}
-
 #endif  // BUILDFLAG(IS_ANDROID)
 
 struct TestVerifyCertState {
@@ -516,6 +532,52 @@ bool GetFullDataFilePath(
   return true;
 }
 
+// Produces URLLoaderFactoryParams suitable for a prefetch. Generally this
+// should match the params that are used for subresource fetches to render
+// processes.
+mojom::URLLoaderFactoryParamsPtr CreateURLLoaderFactoryParamsForPrefetch() {
+  auto params = mojom::URLLoaderFactoryParams::New();
+  params->process_id = mojom::kBrowserProcessId;
+  // We want to be able to use TrustedParams to set the IsolationInfo for each
+  // prefetch separately, so make it trusted.
+  // TODO(crbug.com/342445996): Maybe stop using TrustedParams and lock this
+  // down?
+  params->is_trusted = true;
+
+  // This can be set to true by the content::switches::kDisableWebSecurity
+  // switch, but that's not available in the network service. The consequences
+  // of this being disabled should just be that prefetches fail where this flag
+  // would have taken effect.
+  // TODO(crbug.com/342445996): Pass this through from the caller.
+  //
+  // Android WebView also disables web security when the
+  // `allow_universal_access_from_file_urls` flag is set, however, WebView
+  // doesn't currently support prefetch anyway.
+  params->disable_web_security = false;
+
+  // TODO(crbug.com/342445996): Find out if we need to set anything here.
+  params->client_security_state = mojom::ClientSecurityState::New();
+
+  // TODO(crbug.com/342445996): params->coep_reporter
+
+  // --disable-web-security also disables Opaque Response Blocking (ORB).
+  params->is_orb_enabled = !params->disable_web_security;
+
+  // TODO(crbug.com/342445996): trust_token_issuance_policy,
+  // trust_token_redemption_policy
+
+  // TODO(crbug.com/342445996): Add observers as needed for DevTools support,
+  // etc.
+
+  // TODO(crbug.com/342445996): params->cookie_setting_overrides
+
+  params->debug_tag = "CreateURLLoaderFactoryParamsForPrefetch";
+
+  // TODO(crbug.com/342445996): params->require_cross_site_requests_for_cookies
+
+  return params;
+}
+
 }  // namespace
 
 constexpr uint32_t NetworkContext::kMaxOutstandingRequestsPerProcess;
@@ -604,8 +666,10 @@ NetworkContext::NetworkContext(
         params_->file_paths->shared_dictionary_directory &&
         !params_->file_paths->shared_dictionary_directory->path().empty()) {
 #if BUILDFLAG(IS_ANDROID)
+      disk_cache::ApplicationStatusListenerGetter get_callback;
       app_status_listeners_.push_back(
-          std::make_unique<NetworkContextApplicationStatusListener>());
+          std::make_unique<NetworkContextApplicationStatusListener>(
+              get_callback));
 #endif  // BUILDFLAG(IS_ANDROID)
       // TODO(crbug.com/40255884): Set `file_operations_factory` to support
       // sandboxed network service on Android.
@@ -617,10 +681,7 @@ NetworkContext::NetworkContext(
           params_->shared_dictionary_cache_max_size,
           shared_dictionary::kDictionaryMaxCountPerNetworkContext,
 #if BUILDFLAG(IS_ANDROID)
-          base::BindRepeating(&ReturnAppStatusListenerIfAlive,
-                              weak_factory_.GetWeakPtr(),
-                              base::UnsafeDanglingUntriaged(
-                                  app_status_listeners_.rbegin()->get())),
+          std::move(get_callback),
 #endif  // BUILDFLAG(IS_ANDROID)
           /*file_operations_factory=*/nullptr);
     } else {
@@ -2106,7 +2167,7 @@ void NetworkContext::CreateMdnsResponder(
 
   mdns_responder_manager_->CreateMdnsResponder(std::move(responder_receiver));
 #else
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
 #endif  // BUILDFLAG(ENABLE_MDNS)
 }
 
@@ -2360,12 +2421,12 @@ URLRequestContextOwner NetworkContext::MakeURLRequestContext(
     // TODO(crbug.com/40928765): The TrustAnchorUsed callback should
     // work on all platforms. (Also consider whether this wrapper is the best
     // way to handle this or if it should be refactored.)
-    cert_verifier_with_trust_anchors_ =
-        new CertVerifierWithTrustAnchors(base::BindRepeating(
+    auto cert_verifier_with_trust_anchors =
+        std::make_unique<CertVerifierWithTrustAnchors>(base::BindRepeating(
             &NetworkContext::TrustAnchorUsed, base::Unretained(this)));
-    cert_verifier_with_trust_anchors_->InitializeOnIOThread(
+    cert_verifier_with_trust_anchors->InitializeOnIOThread(
         std::move(cert_verifier));
-    cert_verifier = base::WrapUnique(cert_verifier_with_trust_anchors_.get());
+    cert_verifier = std::move(cert_verifier_with_trust_anchors);
 #endif  // BUILDFLAG(IS_CHROMEOS)
   }
 
@@ -2523,10 +2584,8 @@ URLRequestContextOwner NetworkContext::MakeURLRequestContext(
 
 #if BUILDFLAG(IS_ANDROID)
     app_status_listeners_.push_back(
-        std::make_unique<NetworkContextApplicationStatusListener>());
-    cache_params.app_status_listener_getter = base::BindRepeating(
-        &ReturnAppStatusListenerIfAlive, weak_factory_.GetWeakPtr(),
-        base::UnsafeDanglingUntriaged(app_status_listeners_.rbegin()->get()));
+        std::make_unique<NetworkContextApplicationStatusListener>(
+            cache_params.app_status_listener_getter));
 #endif  // BUILDFLAG(IS_ANDROID)
     builder.EnableHttpCache(cache_params);
   }
@@ -3110,6 +3169,37 @@ void NetworkContext::ExemptUrlFromNetworkRevocationForNonce(
   std::move(callback).Run();
 }
 
+void NetworkContext::Prefetch(
+    int32_t request_id,
+    uint32_t options,
+    const ResourceRequest& request,
+    const net::MutableNetworkTrafficAnnotationTag& traffic_annotation) {
+  if (!base::FeatureList::IsEnabled(features::kNetworkContextPrefetch)) {
+    return;
+  }
+
+  if (!prefetch_cache_) {
+    // Lazily initialized to avoid slowing down startup.
+    prefetch_cache_ = std::make_unique<PrefetchCache>();
+  }
+
+  if (!prefetch_url_loader_factory_remote_.is_bound() ||
+      !prefetch_url_loader_factory_remote_.is_connected()) {
+    InitializePrefetchURLLoaderFactory();
+  }
+
+  PrefetchURLLoaderClient* client = prefetch_cache_->Emplace(request);
+  if (!client) {
+    // This is normal if we already have a prefetch in progress for the {NIK,
+    // URL} combination.
+    return;
+  }
+
+  prefetch_url_loader_factory_remote_->CreateLoaderAndStart(
+      client->GetURLLoaderPendingReceiver(), request_id, options, request,
+      client->BindNewPipeAndPassRemote(), traffic_annotation);
+}
+
 bool NetworkContext::IsNetworkForNonceAndUrlAllowed(
     const base::UnguessableToken& nonce,
     const GURL& url) const {
@@ -3128,4 +3218,11 @@ bool NetworkContext::IsNetworkForNonceAndUrlAllowed(
   return false;
 }
 
+void NetworkContext::InitializePrefetchURLLoaderFactory() {
+  auto pending_receiver =
+      prefetch_url_loader_factory_remote_.BindNewPipeAndPassReceiver();
+  CreateURLLoaderFactory(std::move(pending_receiver),
+                         CreateURLLoaderFactoryParamsForPrefetch());
+}
+
 }  // namespace network
diff --git a/tools/under-control/src/testing/variations/fieldtrial_testing_config.json b/tools/under-control/src/testing/variations/fieldtrial_testing_config.json
index 87d00091f..56b6a6845 100755
--- a/tools/under-control/src/testing/variations/fieldtrial_testing_config.json
+++ b/tools/under-control/src/testing/variations/fieldtrial_testing_config.json
@@ -15,6 +15,29 @@
             ]
         }
     ],
+    "ALPSNewCodepoint": [
+        {
+            "platforms": [
+                "android_webview",
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "UseNewAlpsCodepointHttp2",
+                        "UseNewAlpsCodepointQUIC"
+                    ]
+                }
+            ]
+        }
+    ],
     "AVFoundationCaptureForwardSampleTimestamps": [
         {
             "platforms": [
@@ -65,6 +88,21 @@
             ]
         }
     ],
+    "AccessibilityManageBroadcastReceiverOnBackground": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AccessibilityManageBroadcastReceiverOnBackground"
+                    ]
+                }
+            ]
+        }
+    ],
     "AccessibilityPageZoom": [
         {
             "platforms": [
@@ -342,7 +380,7 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_LooseSimilarityCheckWithCancellingSession_20240419",
+                    "name": "Enabled_LooseSimilarityCheckWithCancellingSession_20240604",
                     "enable_features": [
                         "AndroidAutofillCancelSessionOnNavigation",
                         "AndroidAutofillPrefillRequestsForLoginForms",
@@ -431,6 +469,21 @@
             ]
         }
     ],
+    "AndroidHubFloatingActionButton": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AndroidHubFloatingActionButton"
+                    ]
+                }
+            ]
+        }
+    ],
     "AndroidLowLatencyCanvas": [
         {
             "platforms": [
@@ -519,21 +572,6 @@
             ]
         }
     ],
-    "AndroidOmniboxUxRevampPhase3": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled_Tablets",
-                    "enable_features": [
-                        "OmniboxModernizeVisualUpdate"
-                    ]
-                }
-            ]
-        }
-    ],
     "AndroidSandboxRendererProcessPolicy": [
         {
             "platforms": [
@@ -614,21 +652,6 @@
             ]
         }
     ],
-    "AndroidTabGroupStableIds": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AndroidTabGroupStableIds"
-                    ]
-                }
-            ]
-        }
-    ],
     "AomVpxUseChromeThreads": [
         {
             "platforms": [
@@ -760,18 +783,30 @@
             ],
             "experiments": [
                 {
-                    "name": "Counterfactual",
+                    "name": "Counterfactual_M127",
                     "params": {
-                        "is-counterfactual": "true"
+                        "is-counterfactual": "true",
+                        "is-modified-order": "false"
                     },
                     "enable_features": [
                         "AppsCollections"
                     ]
                 },
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_M127",
                     "params": {
-                        "is-counterfactual": "false"
+                        "is-counterfactual": "false",
+                        "is-modified-order": "false"
+                    },
+                    "enable_features": [
+                        "AppsCollections"
+                    ]
+                },
+                {
+                    "name": "Modified_Order_M127",
+                    "params": {
+                        "is-counterfactual": "false",
+                        "is-modified-order": "true"
                     },
                     "enable_features": [
                         "AppsCollections"
@@ -780,6 +815,39 @@
             ]
         }
     ],
+    "AppsCollectionsHATS": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "HATS_Survey_Finding",
+                    "params": {
+                        "prob": "0.025",
+                        "survey_cycle_length": "7",
+                        "survey_start_date_ms": "1717064595",
+                        "trigger_id": "G3Fdon7fh0jBnuKU19R0XRX1udZS"
+                    },
+                    "enable_features": [
+                        "HappinessTrackingLauncherAppsFinding"
+                    ]
+                },
+                {
+                    "name": "HATS_Survey_Needing",
+                    "params": {
+                        "prob": "0.075",
+                        "survey_cycle_length": "7",
+                        "survey_start_date_ms": "1717064595",
+                        "trigger_id": "c568w7vW40jBnuKU19R0RZJEYkgx"
+                    },
+                    "enable_features": [
+                        "HappinessTrackingLauncherAppsNeeding"
+                    ]
+                }
+            ]
+        }
+    ],
     "ArcBlockIoScheduler": [
         {
             "platforms": [
@@ -799,6 +867,22 @@
             ]
         }
     ],
+    "ArcExtendInputAnrTimeout": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ArcExtendInputAnrTimeout"
+                    ],
+                    "min_os_version": "15915.0.0"
+                }
+            ]
+        }
+    ],
     "ArcIgnoreHoverEventAnr": [
         {
             "platforms": [
@@ -830,6 +914,21 @@
             ]
         }
     ],
+    "ArcSkipDropPageCache": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ArcSkipDropPageCache"
+                    ]
+                }
+            ]
+        }
+    ],
     "ArcUnthrottleOnActiveAudio": [
         {
             "platforms": [
@@ -898,16 +997,16 @@
             ],
             "experiments": [
                 {
-                    "name": "EnabledAC",
+                    "name": "EnabledAC_V2",
                     "params": {
-                        "delay_ms": "120000",
+                        "delay_ms": "420000",
                         "ignore_battery_for_test": "true",
                         "pending_idle_reactivate": "false"
                     },
                     "enable_features": [
                         "ArcIdleManager"
                     ],
-                    "min_os_version": "15591.0.0"
+                    "min_os_version": "15795.0.0"
                 }
             ]
         }
@@ -988,6 +1087,27 @@
             ]
         }
     ],
+    "ArcVmVirtualSwap": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "VirtualSwapEnabled_100PercentVmSize_5SecondSwapInterval",
+                    "params": {
+                        "guest_reclaim_enabled": "true",
+                        "size_percentage": "100",
+                        "virtual_swap_enabled": "true",
+                        "virtual_swap_interval_ms": "5000"
+                    },
+                    "enable_features": [
+                        "ArcGuestZram"
+                    ]
+                }
+            ]
+        }
+    ],
     "ArcVmmSwap": [
         {
             "platforms": [
@@ -1340,6 +1460,27 @@
             ]
         }
     ],
+    "AutofillAddressFieldSwapping": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillAddressFieldSwapping"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillAddressUserPerceptionSurveyUS": [
         {
             "platforms": [
@@ -1384,11 +1525,10 @@
             ]
         }
     ],
-    "AutofillContentEditableChangeEvents": [
+    "AutofillChangeDisusedAddressSuggestionTreatment": [
         {
             "platforms": [
                 "android",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
                 "ios",
@@ -1399,42 +1539,40 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "ignored-suggestions": "3"
+                    },
                     "enable_features": [
-                        "AutofillContentEditableChangeEvents"
+                        "AutofillChangeDisusedAddressSuggestionTreatment"
                     ]
                 }
             ]
         }
     ],
-    "AutofillDetectRemovedFormControls": [
+    "AutofillContentEditableChangeEvents": [
         {
             "platforms": [
                 "android",
                 "android_webview",
                 "chromeos",
                 "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
+                "ios"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "AutofillDetectRemovedFormControls"
+                        "AutofillContentEditableChangeEvents"
                     ]
                 }
             ]
         }
     ],
-    "AutofillEnableAccountStorageForIneligibleCountries": [
+    "AutofillCreditCardUserPerceptionSurvey": [
         {
             "platforms": [
-                "android",
                 "chromeos",
                 "chromeos_lacros",
-                "ios",
                 "linux",
                 "mac",
                 "windows"
@@ -1442,33 +1580,43 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "en_site_id": "Q13fLRHym0ugnJ3q1cK0Tm5d8fMW",
+                        "probability": "1"
+                    },
                     "enable_features": [
-                        "AutofillEnableAccountStorageForIneligibleCountries"
+                        "AutofillCreditCardUserPerceptionSurvey"
                     ]
                 }
             ]
         }
     ],
-    "AutofillEnableAndroidNKeyForFidoAuthentication": [
+    "AutofillDetectRemovedFormControls": [
         {
             "platforms": [
-                "android"
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "AutofillEnableAndroidNKeyForFidoAuthentication"
+                        "AutofillDetectRemovedFormControls"
                     ]
                 }
             ]
         }
     ],
-    "AutofillEnableCacheForRegexMatching": [
+    "AutofillEnableAccountStorageForIneligibleCountries": [
         {
             "platforms": [
                 "android",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
                 "ios",
@@ -1479,11 +1627,23 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "cache_size": "1000"
-                    },
                     "enable_features": [
-                        "AutofillEnableCacheForRegexMatching"
+                        "AutofillEnableAccountStorageForIneligibleCountries"
+                    ]
+                }
+            ]
+        }
+    ],
+    "AutofillEnableAndroidNKeyForFidoAuthentication": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillEnableAndroidNKeyForFidoAuthentication"
                     ]
                 }
             ]
@@ -1554,6 +1714,45 @@
             ]
         }
     ],
+    "AutofillEnableDisablingSuggestionsOnJSFocus": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillAndroidDisableSuggestionsOnJSFocus"
+                    ]
+                }
+            ]
+        }
+    ],
+    "AutofillEnableEmailHeuristicOnlyAddressForms": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_AutocompleteAll",
+                    "params": {
+                        "autocomplete_email": "false"
+                    },
+                    "enable_features": [
+                        "AutofillEnableEmailHeuristicOnlyAddressForms"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillEnableExpirationDateImprovements": [
         {
             "platforms": [
@@ -1804,13 +2003,14 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
+                        "AllowJavaScriptToResetAutofillState",
                         "AutofillFixCachingOnJavaScriptChanges"
                     ]
                 }
             ]
         }
     ],
-    "AutofillGranularFillingAndManualFallbackForUnclassifiedFieldsAvailable": [
+    "AutofillGranularFillingAvailable": [
         {
             "platforms": [
                 "chromeos",
@@ -1821,24 +2021,74 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_GranularFillingOnly",
+                    "name": "Enabled",
+                    "params": {
+                        "autofill_granular_filling_with_expand_control_visible_on_selection_only": "false",
+                        "autofill_granular_filling_with_fill_everything_in_the_footer": "true",
+                        "autofill_granular_filling_with_improved_labels": "true"
+                    },
                     "enable_features": [
                         "AutofillGranularFillingAvailable"
-                    ],
-                    "disable_features": [
-                        "AutofillForUnclassifiedFieldsAvailable"
                     ]
                 },
                 {
-                    "name": "Enabled_GranularFillingAndManualFallbackForUnclassifiedFields",
+                    "name": "Enabled_WithoutImprovedLabels",
+                    "params": {
+                        "autofill_granular_filling_with_expand_control_visible_on_selection_only": "false",
+                        "autofill_granular_filling_with_fill_everything_in_the_footer": "true",
+                        "autofill_granular_filling_with_improved_labels": "false"
+                    },
+                    "enable_features": [
+                        "AutofillGranularFillingAvailable"
+                    ]
+                },
+                {
+                    "name": "Enabled_WithFillEverythingAtTheTop",
+                    "params": {
+                        "autofill_granular_filling_with_expand_control_visible_on_selection_only": "false",
+                        "autofill_granular_filling_with_fill_everything_in_the_footer": "false",
+                        "autofill_granular_filling_with_improved_labels": "true"
+                    },
+                    "enable_features": [
+                        "AutofillGranularFillingAvailable"
+                    ]
+                },
+                {
+                    "name": "Enabled_WithExpandControlVisibleOnSelectionOnly",
+                    "params": {
+                        "autofill_granular_filling_with_expand_control_visible_on_selection_only": "true",
+                        "autofill_granular_filling_with_fill_everything_in_the_footer": "true",
+                        "autofill_granular_filling_with_improved_labels": "true"
+                    },
                     "enable_features": [
-                        "AutofillForUnclassifiedFieldsAvailable",
                         "AutofillGranularFillingAvailable"
                     ]
                 }
             ]
         }
     ],
+    "AutofillImproveSubmissionDetection": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_UnifySubmissionAndUseDomNodeIds",
+                    "enable_features": [
+                        "AutofillReplaceCachedWebElementsByRendererIds",
+                        "AutofillUnifyAndFixFormTracking"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillKeyboardAccessory": [
         {
             "platforms": [
@@ -1898,6 +2148,25 @@
             ]
         }
     ],
+    "AutofillManualFallbackForUnclassifiedFieldsAvailable": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillForUnclassifiedFieldsAvailable"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillModelPredictions": [
         {
             "platforms": [
@@ -1941,6 +2210,73 @@
             ]
         }
     ],
+    "AutofillPasswordUserPerceptionSurvey": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "en_site_id": "cLnNGzEX59NNVVEtwumiSF",
+                        "probability": "1"
+                    },
+                    "enable_features": [
+                        "AutofillPasswordUserPerceptionSurvey"
+                    ]
+                }
+            ]
+        }
+    ],
+    "AutofillPhoneNumberDetectionImprovements": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_All",
+                    "enable_features": [
+                        "AutofillConsiderPhoneNumberSeparatorsValidLabels",
+                        "AutofillEnableSupportForPhoneNumberTrunkTypes",
+                        "AutofillInferCountryCallingCode",
+                        "AutofillPreferParsedPhoneNumber"
+                    ]
+                }
+            ]
+        }
+    ],
+    "AutofillPopupZOrderSecuritySurface_DisabledByDefault": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillPopupZOrderSecuritySurface"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillPreFilledFieldsCorrectly": [
         {
             "platforms": [
@@ -1963,11 +2299,10 @@
             ]
         }
     ],
-    "AutofillReplaceCachedWebElementsByRendererIds": [
+    "AutofillSharedStorageServerCardData": [
         {
             "platforms": [
                 "android",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
                 "linux",
@@ -1978,18 +2313,19 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "AutofillReplaceCachedWebElementsByRendererIds"
+                        "AutofillSharedStorageServerCardData"
                     ]
                 }
             ]
         }
     ],
-    "AutofillSharedStorageServerCardData": [
+    "AutofillSilentlyRemoveQuasiDuplicates": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "chromeos_lacros",
+                "ios",
                 "linux",
                 "mac",
                 "windows"
@@ -1998,7 +2334,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "AutofillSharedStorageServerCardData"
+                        "AutofillSilentlyRemoveQuasiDuplicates"
                     ]
                 }
             ]
@@ -2100,49 +2436,6 @@
             ]
         }
     ],
-    "AutofillTextAreaChangeEvents": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AutofillTextAreaChangeEvents"
-                    ]
-                }
-            ]
-        }
-    ],
-    "AutofillUnifyAndFixFormTracking": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "AutofillUnifyAndFixFormTracking"
-                    ]
-                }
-            ]
-        }
-    ],
     "AutofillUploadVotesForFieldsWithEmail": [
         {
             "platforms": [
@@ -2327,6 +2620,9 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "AvoidEntryCreationForNoStoreCacheSize": "10000"
+                    },
                     "enable_features": [
                         "AvoidEntryCreationForNoStore"
                     ]
@@ -2376,6 +2672,28 @@
             ]
         }
     ],
+    "AvoidScheduleWorkDuringNativeEventProcessing": [
+        {
+            "platforms": [
+                "android_webview",
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AvoidScheduleWorkDuringNativeEventProcessing"
+                    ]
+                }
+            ]
+        }
+    ],
     "BFCachePerformanceManagerPolicy": [
         {
             "platforms": [
@@ -2625,6 +2943,21 @@
             ]
         }
     ],
+    "BackToHomeAnimation": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_20240423",
+                    "enable_features": [
+                        "BackToHomeAnimation"
+                    ]
+                }
+            ]
+        }
+    ],
     "BackgroundCrxDownloaderMac": [
         {
             "platforms": [
@@ -2677,6 +3010,42 @@
             ]
         }
     ],
+    "BatchNativeEventsInMessagePumpEpoll": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "android_webview",
+                "android_weblayer"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "BatchNativeEventsInMessagePumpEpoll"
+                    ]
+                }
+            ]
+        }
+    ],
+    "BatchNativeEventsInMessagePumpKqueue": [
+        {
+            "platforms": [
+                "mac",
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "BatchNativeEventsInMessagePumpKqueue"
+                    ]
+                }
+            ]
+        }
+    ],
     "BatterySaverModeRenderTuning": [
         {
             "platforms": [
@@ -2764,11 +3133,10 @@
             ]
         }
     ],
-    "BlinkSchedulerPrioritizeNavigationIPCs": [
+    "BlockAcceptClientHints": [
         {
             "platforms": [
                 "android",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
                 "linux",
@@ -2778,8 +3146,11 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "BlockedSite": "https://www.google.com"
+                    },
                     "enable_features": [
-                        "BlinkSchedulerPrioritizeNavigationIPCs"
+                        "BlockAcceptClientHints"
                     ]
                 }
             ]
@@ -2972,6 +3343,21 @@
             ]
         }
     ],
+    "BrowsingDataModelAndroid": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "BrowsingDataModel"
+                    ]
+                }
+            ]
+        }
+    ],
     "BubbleMetricsApi": [
         {
             "platforms": [
@@ -3033,10 +3419,7 @@
     "ButterOnDesktopFollowup": [
         {
             "platforms": [
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos_lacros"
             ],
             "experiments": [
                 {
@@ -3048,30 +3431,25 @@
             ]
         }
     ],
-    "CCTMinimized": [
+    "CCTGoogleBottomBar": [
         {
             "platforms": [
                 "android"
             ],
             "experiments": [
                 {
-                    "name": "EnabledWithIPH",
+                    "name": "EnabledWithBalancedLayout_Dev",
                     "params": {
-                        "availability": "any",
-                        "event_1": "name:cct_minimized_iph_trigger;comparator:<1;window:1;storage:360",
-                        "event_trigger": "name:cct_minimized_iph_trigger;comparator:<3;window:360;storage:360",
-                        "event_used": "name:cct_minimize_button_clicked;comparator:==0;window:360;storage:360",
-                        "session_rate": "==0"
+                        "google_bottom_bar_button_list": "0,3,1,2"
                     },
                     "enable_features": [
-                        "CCTMinimized",
-                        "IPH_CCTMinimized"
+                        "CCTGoogleBottomBar"
                     ]
                 }
             ]
         }
     ],
-    "CCTPageInsightsHub": [
+    "CCTPrewarmTab": [
         {
             "platforms": [
                 "android"
@@ -3079,37 +3457,48 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "page_insights_alt_privacy_notice_url": "https://support.google.com/chrome?p=page_insights",
-                        "page_insights_send_context_metadata": "true"
-                    },
                     "enable_features": [
-                        "CCTPageInsightsHub"
+                        "CCTPrewarmTab"
                     ]
                 }
             ]
         }
     ],
-    "CPUInterventionEvaluationLogging": [
+    "CPSS-V2-Android": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "android"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240215",
+                    "name": "Enabled_20240508",
                     "enable_features": [
-                        "CPUInterventionEvaluationLogging"
+                        "PermissionDedicatedCpssSettingAndroid"
                     ]
                 }
             ]
         }
     ],
-    "CSSDisplayAnimation": [
+    "CPUInterventionEvaluationLogging": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_20240215",
+                    "enable_features": [
+                        "CPUInterventionEvaluationLogging"
+                    ]
+                }
+            ]
+        }
+    ],
+    "CSSDisplayAnimation": [
         {
             "platforms": [
                 "android",
@@ -3136,14 +3525,14 @@
             ]
         }
     ],
-    "CSSMPCImprovements": [
+    "CSSLazyParsingFastPath": [
         {
             "platforms": [
                 "android",
+                "android_weblayer",
                 "android_webview",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -3152,13 +3541,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "CSSMPCImprovements"
-                    ]
-                },
-                {
-                    "name": "Holdback",
-                    "disable_features": [
-                        "CSSMPCImprovements"
+                        "CSSLazyParsingFastPath"
                     ]
                 }
             ]
@@ -3262,21 +3645,6 @@
             ]
         }
     ],
-    "CanvasOopWithoutGpuTileRaster": [
-        {
-            "platforms": [
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "CanvasOopWithoutGpuTileRaster"
-                    ]
-                }
-            ]
-        }
-    ],
     "CanvasOutOfProcessRasterization": [
         {
             "platforms": [
@@ -3729,21 +4097,6 @@
             ]
         }
     ],
-    "ChromeOSAmbientModeThrottleAnimation": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "ChromeOSAmbientModeThrottleAnimation"
-                    ]
-                }
-            ]
-        }
-    ],
     "ChromeOSBoostUrgentVariables": [
         {
             "platforms": [
@@ -3797,6 +4150,21 @@
             ]
         }
     ],
+    "ChromeOSGlanceablesTimeManagementClassroomStudentView": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "GlanceablesTimeManagementClassroomStudentView"
+                    ]
+                }
+            ]
+        }
+    ],
     "ChromeOSGlanceablesTimeManagementTasksView": [
         {
             "platforms": [
@@ -3828,157 +4196,137 @@
             ]
         }
     ],
-    "ChromeOSHoldingSpaceWallpaperNudge": [
+    "ChromeOSGrowthFrameworkFileAppGamgee": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "EnabledWithDropToPinAndAutoOpen",
-                    "params": {
-                        "auto-open": "true",
-                        "drop-to-pin": "true",
-                        "is-counterfactual": "false"
-                    },
-                    "enable_features": [
-                        "HoldingSpaceWallpaperNudge"
-                    ]
-                },
-                {
-                    "name": "EnabledWithDropToPinButWithoutAutoOpen",
-                    "params": {
-                        "auto-open": "false",
-                        "drop-to-pin": "true",
-                        "is-counterfactual": "false"
-                    },
-                    "enable_features": [
-                        "HoldingSpaceWallpaperNudge"
-                    ]
-                },
-                {
-                    "name": "EnabledWithoutDropToPin",
-                    "params": {
-                        "drop-to-pin": "false",
-                        "is-counterfactual": "false"
-                    },
-                    "enable_features": [
-                        "HoldingSpaceWallpaperNudge"
-                    ]
-                },
-                {
-                    "name": "Counterfactual",
+                    "name": "Enabled",
                     "params": {
-                        "is-counterfactual": "true"
+                        "exp_tag": "file_app_gamgee_exp"
                     },
                     "enable_features": [
-                        "HoldingSpaceWallpaperNudge"
+                        "GrowthCampaignsExperimentFileAppGamgee"
+                    ],
+                    "disable_features": [
+                        "GoogleOneOfferFilesBanner"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSIgnoreUiGainsOnAGC": [
+    "ChromeOSGrowthFrameworkG1Nudge": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20230905",
+                    "name": "Photos",
+                    "params": {
+                        "exp_tag": "g1_photos"
+                    },
                     "enable_features": [
-                        "IgnoreUiGains"
+                        "DisableGoogleOneOfferFilesBanner",
+                        "GrowthCampaignsExperimentG1Nudge"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSMaterialNextWaveOneWithTimeOfDayM117AndBeyond": [
+    "ChromeOSGrowthFrameworkStudy1": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "TimeOfDayEnabledM117AndBeyond",
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_1_1"
+                    },
                     "enable_features": [
-                        "FeatureManagementTimeOfDayScreenSaver",
-                        "FeatureManagementTimeOfDayWallpaper",
-                        "Jelly",
-                        "TimeOfDayScreenSaver",
-                        "TimeOfDayWallpaper"
+                        "GrowthCampaignsExperiment1"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSMemoryPressureSignalStudyArc": [
+    "ChromeOSGrowthFrameworkStudy10": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Enabled5MinutesKillDelay",
+                    "name": "Enabled",
                     "params": {
-                        "critical_threshold_percentage": "800",
-                        "priority_app_lmk_delay_list": "com.mojang.minecraftpe,com.cisco.anyconnect.vpn.android.avf,com.cisco.anyconnect.vpn.android.avf:nchs,com.cisco.anyconnect.vpn.android.avf:umbrella,zscaler.com.zschromeosapp,net.openvpn.openvpn,net.openvpn.openvpn:openvpn_service,com.checkpoint.VPN,com.fortinet.forticlient_vpn,com.fast.free.unblock.secure.vpn,com.zscaler.doeprod4522",
-                        "priority_app_lmk_delay_sec": "300"
+                        "exp_tag": "exp_tag_10_1"
                     },
                     "enable_features": [
-                        "ArcPriorityAppLmkDelay",
-                        "ChromeOSMemoryPressureSignalStudyArc"
+                        "GrowthCampaignsExperiment10"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSMemoryPressureSignalStudyNonArc": [
+    "ChromeOSGrowthFrameworkStudy11": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Disabled",
-                    "disable_features": [
-                        "ChromeOSMemoryPressureSignalStudyNonArc"
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_11_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment11"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSOobeGaiaInfoScreen": [
+    "ChromeOSGrowthFrameworkStudy12": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Disabled",
-                    "disable_features": [
-                        "OobeGaiaInfoScreen"
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_12_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment12"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSOobeQuickStart": [
+    "ChromeOSGrowthFrameworkStudy13": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Disabled",
-                    "disable_features": [
-                        "OobeQuickStart"
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_13_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment13"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSPrintingIppUsb": [
+    "ChromeOSGrowthFrameworkStudy14": [
         {
             "platforms": [
                 "chromeos"
@@ -3986,283 +4334,682 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_14_1"
+                    },
                     "enable_features": [
-                        "IppFirstSetupForUsbPrinters"
+                        "GrowthCampaignsExperiment14"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSRawPSIMetrics": [
+    "ChromeOSGrowthFrameworkStudy15": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "EnabledGroup10s_20220107",
+                    "name": "Enabled",
                     "params": {
-                        "period": "10"
+                        "exp_tag": "exp_tag_15_1"
                     },
                     "enable_features": [
-                        "ArcVmMemoryPSIReports",
-                        "MemoryPressureMetricsDetail"
+                        "GrowthCampaignsExperiment15"
                     ]
                 }
             ]
         }
     ],
-    "ChromeOSWelcomeTour": [
+    "ChromeOSGrowthFrameworkStudy16": [
         {
             "platforms": [
                 "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Counterfactual_CANARY_DEV_10",
-                    "params": {
-                        "is-counterfactual": "true"
-                    },
-                    "enable_features": [
-                        "WelcomeTour"
-                    ]
-                },
-                {
-                    "name": "Enabled_CANARY_DEV_10",
+                    "name": "Enabled",
                     "params": {
-                        "is-counterfactual": "false"
+                        "exp_tag": "exp_tag_16_1"
                     },
                     "enable_features": [
-                        "WelcomeTour"
+                        "GrowthCampaignsExperiment16"
                     ]
                 }
             ]
         }
     ],
-    "ChromeStartAccessibility": [
+    "ChromeOSGrowthFrameworkStudy17": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_17_1"
+                    },
                     "enable_features": [
-                        "StartSurfaceWithAccessibility"
+                        "GrowthCampaignsExperiment17"
                     ]
                 }
             ]
         }
     ],
-    "ChromeWallpaperSearchEntrypoints": [
+    "ChromeOSGrowthFrameworkStudy18": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "BothEntrypointsAndAnimation",
-                    "enable_features": [
-                        "CustomizeChromeWallpaperSearchButton",
-                        "NtpWallpaperSearchButton",
-                        "NtpWallpaperSearchButtonAnimation"
-                    ]
-                },
-                {
-                    "name": "BothEntrypointsNoAnimation",
-                    "enable_features": [
-                        "CustomizeChromeWallpaperSearchButton",
-                        "NtpWallpaperSearchButton"
-                    ],
-                    "disable_features": [
-                        "NtpWallpaperSearchButtonAnimation"
-                    ]
-                },
-                {
-                    "name": "PanoramaButtonOnlyNoAnimation",
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_18_1"
+                    },
                     "enable_features": [
-                        "CustomizeChromeWallpaperSearchButton"
-                    ],
-                    "disable_features": [
-                        "NtpWallpaperSearchButton",
-                        "NtpWallpaperSearchButtonAnimation"
+                        "GrowthCampaignsExperiment18"
                     ]
                 }
             ]
         }
     ],
-    "ChromeWallpaperSearchHaTS": [
+    "ChromeOSGrowthFrameworkStudy19": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "params": {
-                        "WallpaperSearchHatsDelayParam": "18s",
-                        "en_site_id": "foo",
-                        "probability": "1.0"
+                        "exp_tag": "exp_tag_19_1"
                     },
                     "enable_features": [
-                        "HappinessTrackingSurveysForWallpaperSearch"
+                        "GrowthCampaignsExperiment19"
                     ]
                 }
             ]
         }
     ],
-    "ChromeWideEchoCancellation": [
+    "ChromeOSGrowthFrameworkStudy2": [
         {
             "platforms": [
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20220412",
+                    "name": "Enabled",
                     "params": {
-                        "processing_fifo_size": "110"
+                        "exp_tag": "exp_tag_2_1"
                     },
                     "enable_features": [
-                        "ChromeWideEchoCancellation"
+                        "GrowthCampaignsExperiment2"
                     ]
                 }
             ]
         }
     ],
-    "Chromnient": [
+    "ChromeOSGrowthFrameworkStudy20": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "params": {
-                        "endpoint-url": "https://lensfrontend-pa.googleapis.com/v1/crupload",
-                        "use-oauth-for-requests": "true"
+                        "exp_tag": "exp_tag_20_1"
                     },
                     "enable_features": [
-                        "LensOverlay"
+                        "GrowthCampaignsExperiment20"
                     ]
                 }
             ]
         }
     ],
-    "ClankFeedSyntheticCapabilities": [
+    "ChromeOSGrowthFrameworkStudy3": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_3_1"
+                    },
                     "enable_features": [
-                        "FeedSyntheticCapabilities"
+                        "GrowthCampaignsExperiment3"
                     ]
                 }
             ]
         }
     ],
-    "ClankFollowUIUpdate": [
+    "ChromeOSGrowthFrameworkStudy4": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_4_1"
+                    },
                     "enable_features": [
-                        "FeedFollowUiUpdate"
+                        "GrowthCampaignsExperiment4"
                     ]
                 }
             ]
         }
     ],
-    "ClankLogoPolish": [
+    "ChromeOSGrowthFrameworkStudy5": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_Large_Logo_Size",
+                    "name": "Enabled",
                     "params": {
-                        "polish_logo_size_large": "true",
-                        "polish_logo_size_medium": "false"
+                        "exp_tag": "exp_tag_5_1"
                     },
                     "enable_features": [
-                        "LogoPolish"
+                        "GrowthCampaignsExperiment5"
                     ]
                 }
             ]
         }
     ],
-    "ClankMagicStack": [
+    "ChromeOSGrowthFrameworkStudy6": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "params": {
-                        "show_tabs_in_one_module": "true"
+                        "exp_tag": "exp_tag_6_1"
                     },
                     "enable_features": [
-                        "MagicStackAndroid",
-                        "PriceChangeModule",
-                        "SegmentationPlatformAndroidHomeModuleRanker"
+                        "GrowthCampaignsExperiment6"
                     ]
                 }
             ]
         }
     ],
-    "ClankTabResumpton": [
+    "ChromeOSGrowthFrameworkStudy7": [
         {
             "platforms": [
-                "android"
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_7_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment7"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSGrowthFrameworkStudy8": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_8_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment8"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSGrowthFrameworkStudy9": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "exp_tag": "exp_tag_9_1"
+                    },
+                    "enable_features": [
+                        "GrowthCampaignsExperiment9"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSHoldingSpaceSuggestions": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_Dogfood",
+                    "enable_features": [
+                        "HoldingSpaceSuggestions"
+                    ]
+                },
+                {
+                    "name": "Enabled_Teamfood",
+                    "enable_features": [
+                        "HoldingSpaceSuggestions"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSIgnoreUiGainsOnAGC": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_20230905",
+                    "enable_features": [
+                        "IgnoreUiGains"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSMaterialNextWaveOneWithTimeOfDayM117AndBeyond": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "TimeOfDayEnabledM117AndBeyond",
+                    "enable_features": [
+                        "FeatureManagementTimeOfDayScreenSaver",
+                        "FeatureManagementTimeOfDayWallpaper",
+                        "Jelly",
+                        "TimeOfDayScreenSaver",
+                        "TimeOfDayWallpaper"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSMemoryPressureSignalStudyArc": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled5MinutesKillDelay",
+                    "params": {
+                        "critical_threshold_percentage": "800",
+                        "priority_app_lmk_delay_list": "com.mojang.minecraftpe,com.cisco.anyconnect.vpn.android.avf,com.cisco.anyconnect.vpn.android.avf:nchs,com.cisco.anyconnect.vpn.android.avf:umbrella,zscaler.com.zschromeosapp,net.openvpn.openvpn,net.openvpn.openvpn:openvpn_service,com.checkpoint.VPN,com.fortinet.forticlient_vpn,com.fast.free.unblock.secure.vpn,com.zscaler.doeprod4522",
+                        "priority_app_lmk_delay_sec": "300"
+                    },
+                    "enable_features": [
+                        "ArcPriorityAppLmkDelay",
+                        "ChromeOSMemoryPressureSignalStudyArc"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSMemoryPressureSignalStudyNonArc": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "ChromeOSMemoryPressureSignalStudyNonArc"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSOobeGaiaInfoScreen": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "OobeGaiaInfoScreen"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSOobePersonalizedOnboarding": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "OobePersonalizedOnboarding"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSOobeQuickStart": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "OobeQuickStart"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSPrintingIppUsb": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "IppFirstSetupForUsbPrinters"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSRawPSIMetrics": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "EnabledGroup10s_20220107",
+                    "params": {
+                        "period": "10"
+                    },
+                    "enable_features": [
+                        "ArcVmMemoryPSIReports",
+                        "MemoryPressureMetricsDetail"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeOSWelcomeTour": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Counterfactual_CANARY_DEV_10_20240601",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_CANARY_DEV_10_20240601",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Counterfactual_BETA_10_20240601",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_BETA_10_20240601",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Counterfactual_STABLE_10_20240601",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_STABLE_10_20240601",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Counterfactual_CANARY_DEV_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_CANARY_DEV_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "EnabledV2_CANARY_DEV_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour",
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Counterfactual_BETA_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_BETA_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "EnabledV2_BETA_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour",
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Counterfactual_STABLE_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "true"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "Enabled_STABLE_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour"
+                    ],
+                    "disable_features": [
+                        "WelcomeTourV2"
+                    ]
+                },
+                {
+                    "name": "EnabledV2_STABLE_10_20240601_m127",
+                    "params": {
+                        "is-counterfactual": "false"
+                    },
+                    "enable_features": [
+                        "WelcomeTour",
+                        "WelcomeTourV2"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeStartAccessibility": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "StartSurfaceWithAccessibility"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ChromeWallpaperSearchEntrypoints": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
-                    "params": {
-                        "max_tiles_number": "1",
-                        "show_see_more": "true",
-                        "use_default_app_filter": "true",
-                        "use_salient_image": "true"
-                    },
+                    "name": "BothEntrypointsAndAnimation",
                     "enable_features": [
-                        "TabResumptionModuleAndroid"
+                        "CustomizeChromeWallpaperSearchButton",
+                        "NtpWallpaperSearchButton",
+                        "NtpWallpaperSearchButtonAnimation"
+                    ]
+                },
+                {
+                    "name": "BothEntrypointsNoAnimation",
+                    "enable_features": [
+                        "CustomizeChromeWallpaperSearchButton",
+                        "NtpWallpaperSearchButton"
+                    ],
+                    "disable_features": [
+                        "NtpWallpaperSearchButtonAnimation"
+                    ]
+                },
+                {
+                    "name": "PanoramaButtonOnlyNoAnimation",
+                    "enable_features": [
+                        "CustomizeChromeWallpaperSearchButton"
+                    ],
+                    "disable_features": [
+                        "NtpWallpaperSearchButton",
+                        "NtpWallpaperSearchButtonAnimation"
                     ]
                 }
             ]
         }
     ],
-    "ClearCanvasResourcesInBackground": [
+    "ChromeWallpaperSearchHaTS": [
         {
             "platforms": [
-                "android",
-                "android_weblayer",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
-                "ios",
                 "linux",
                 "mac",
                 "windows"
@@ -4270,37 +5017,44 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "WallpaperSearchHatsDelayParam": "18s",
+                        "en_site_id": "foo",
+                        "probability": "1.0"
+                    },
                     "enable_features": [
-                        "ClearCanvasResourcesInBackground"
+                        "HappinessTrackingSurveysForWallpaperSearch"
                     ]
                 }
             ]
         }
     ],
-    "ClientSideDetectionDebuggingMetadataCache": [
+    "ChromeWideEchoCancellation": [
         {
             "platforms": [
-                "android",
-                "chromeos",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_20220412",
+                    "params": {
+                        "processing_fifo_size": "110"
+                    },
                     "enable_features": [
-                        "ClientSideDetectionDebuggingMetadataCache"
+                        "ChromeWideEchoCancellation"
                     ]
                 }
             ]
         }
     ],
-    "ClientSideDetectionImagesCache": [
+    "Chromnient": [
         {
             "platforms": [
-                "android",
                 "chromeos",
+                "chromeos_lacros",
                 "linux",
                 "mac",
                 "windows"
@@ -4308,8 +5062,119 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "endpoint-url": "https://lensfrontend-pa.googleapis.com/v1/crupload",
+                        "omnibox-entry-point": "false",
+                        "select-text-over-region-trigger-threshold": "0.1",
+                        "text-vertical-margin": "12",
+                        "use-oauth-for-requests": "true"
+                    },
+                    "enable_features": [
+                        "LensOverlay"
+                    ],
+                    "disable_features": [
+                        "ContextMenuSearchForVideoFrame"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ClankFeedSyntheticCapabilities": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "FeedSyntheticCapabilities"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ClankFollowUIUpdate": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "FeedFollowUiUpdate"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ClankLogoPolish": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_Large_Logo_Size",
+                    "params": {
+                        "polish_logo_size_large": "true",
+                        "polish_logo_size_medium": "false"
+                    },
+                    "enable_features": [
+                        "LogoPolish"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ClankTabResumpton": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "max_tiles_number": "1",
+                        "show_see_more": "true",
+                        "show_tabs_in_one_module": "true",
+                        "use_default_app_filter": "true",
+                        "use_salient_image": "true"
+                    },
+                    "enable_features": [
+                        "TabResumptionModuleAndroid"
+                    ]
+                },
+                {
+                    "name": "EnabledV2",
+                    "params": {
+                        "disable_blend": "true",
+                        "enable_v2": "true",
+                        "max_tiles_number": "1",
+                        "show_see_more": "true",
+                        "show_tabs_in_one_module": "true",
+                        "use_default_app_filter": "true",
+                        "use_salient_image": "true"
+                    },
+                    "enable_features": [
+                        "TabResumptionModuleAndroid"
+                    ]
+                },
+                {
+                    "name": "EnabledML",
+                    "params": {
+                        "enable_v2": "true",
+                        "fetch_history_backend": "true",
+                        "fetch_local_tabs_backend": "true",
+                        "show_see_more": "true",
+                        "show_tabs_in_one_module": "true",
+                        "use_default_app_filter": "true",
+                        "use_salient_image": "true"
+                    },
                     "enable_features": [
-                        "ClientSideDetectionImagesCache"
+                        "TabResumptionModuleAndroid"
                     ]
                 }
             ]
@@ -4413,6 +5278,25 @@
             ]
         }
     ],
+    "ClientSideDetectionVibrationApi": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ClientSideDetectionVibrationApi"
+                    ]
+                }
+            ]
+        }
+    ],
     "ClipboardDeemphasisAndroid": [
         {
             "platforms": [
@@ -4640,37 +5524,127 @@
                         "use_root_bookmark_as_default": "true"
                     },
                     "enable_features": [
-                        "CommercePriceTracking",
-                        "OptimizationGuidePushNotifications",
-                        "ReadLater",
-                        "ShoppingList"
+                        "CommercePriceTracking",
+                        "OptimizationGuidePushNotifications",
+                        "ReadLater",
+                        "ShoppingList"
+                    ]
+                }
+            ]
+        }
+    ],
+    "CommerceHintAndroid": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "enabled_commerce_hint_20220623",
+                    "enable_features": [
+                        "CommerceHintAndroid"
+                    ]
+                }
+            ]
+        }
+    ],
+    "CommerceLocalPDPDetection": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "CommerceLocalPDPDetection"
+                    ]
+                }
+            ]
+        }
+    ],
+    "CommercePriceInsights": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "availability": "any",
+                        "event_1": "name:price_insights_page_action_icon_label_in_trigger;comparator:any;window:0;storage:360",
+                        "event_trigger": "name:price_insights_page_action_icon_label_in_trigger;comparator:any;window:0;storage:360",
+                        "event_used": "name:price_insights_page_action_icon_label_used;comparator:any;window:0;storage:360",
+                        "price-insights-show-feedback": "true",
+                        "session_rate": "any"
+                    },
+                    "enable_features": [
+                        "IPH_PriceInsightsPageActionIconLabelFeature",
+                        "PriceInsights"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ComposeModelQualityLogging": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "ComposeLoggingEnabled_Dogfood",
+                    "params": {
+                        "model_execution_feature_compose": "true"
+                    },
+                    "enable_features": [
+                        "ModelQualityLogging"
                     ]
                 }
             ]
         }
     ],
-    "CommerceHintAndroid": [
+    "ComposeOnDeviceModel": [
         {
             "platforms": [
-                "android"
+                "linux",
+                "mac",
+                "windows"
             ],
             "experiments": [
                 {
-                    "name": "enabled_commerce_hint_20220623",
+                    "name": "Enabled",
+                    "params": {
+                        "on_device_retract_unsafe_content": "false",
+                        "on_device_text_safety_token_interval": "10"
+                    },
                     "enable_features": [
-                        "CommerceHintAndroid"
+                        "OptimizationGuideComposeOnDeviceEval",
+                        "OptimizationGuideOnDeviceModel",
+                        "TextSafetyClassifier"
                     ]
                 }
             ]
         }
     ],
-    "CommerceLocalPDPDetection": [
+    "ComposeUiRefinement": [
         {
             "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "ios",
                 "linux",
                 "mac",
                 "windows"
@@ -4679,17 +5653,20 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "CommerceLocalPDPDetection"
+                        "ComposeUiRefinement"
                     ]
                 }
             ]
         }
     ],
-    "CommercePriceInsights": [
+    "CompressionDictionaryTransport": [
         {
             "platforms": [
+                "android",
+                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -4697,25 +5674,17 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "availability": "any",
-                        "event_1": "name:price_insights_page_action_icon_label_in_trigger;comparator:any;window:0;storage:360",
-                        "event_trigger": "name:price_insights_page_action_icon_label_in_trigger;comparator:any;window:0;storage:360",
-                        "event_used": "name:price_insights_page_action_icon_label_used;comparator:any;window:0;storage:360",
-                        "price-insights-show-feedback": "true",
-                        "session_rate": "any"
-                    },
                     "enable_features": [
-                        "IPH_PriceInsightsPageActionIconLabelFeature",
-                        "PriceInsights"
+                        "CompressionDictionaryTransport"
                     ]
                 }
             ]
         }
     ],
-    "ComposeModelQualityLogging": [
+    "CompressionDictionaryTransportOverHttp1": [
         {
             "platforms": [
+                "android",
                 "chromeos",
                 "chromeos_lacros",
                 "linux",
@@ -4724,25 +5693,21 @@
             ],
             "experiments": [
                 {
-                    "name": "ComposeLoggingEnabled_Dogfood",
-                    "params": {
-                        "model_execution_feature_compose": "true"
-                    },
+                    "name": "Enabled",
                     "enable_features": [
-                        "ModelQualityLogging"
+                        "CompressionDictionaryTransportOverHttp1"
                     ]
                 }
             ]
         }
     ],
-    "CompressionDictionaryTransport": [
+    "ConcurrentViewTransitionsSPA": [
         {
             "platforms": [
-                "android",
                 "android_webview",
+                "android",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -4751,18 +5716,17 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "CompressionDictionaryTransport"
+                        "ConcurrentViewTransitionsSPA"
                     ]
                 }
             ]
         }
     ],
-    "CompressionDictionaryTransportOverHttp1": [
+    "ConditionalImageResize": [
         {
             "platforms": [
                 "android",
                 "chromeos",
-                "chromeos_lacros",
                 "linux",
                 "mac",
                 "windows"
@@ -4771,7 +5735,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "CompressionDictionaryTransportOverHttp1"
+                        "ConditionalImageResize"
                     ]
                 }
             ]
@@ -5047,6 +6011,21 @@
             ]
         }
     ],
+    "CrOSBluetoothFlossTelephony": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "BluetoothFlossTelephony"
+                    ]
+                }
+            ]
+        }
+    ],
     "CrOSBluetoothHfpSuperWideband": [
         {
             "platforms": [
@@ -5151,24 +6130,6 @@
             ]
         }
     ],
-    "CrOSFederatedLauncherQueryPhhVersion1": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "params": {
-                        "launch_stage": "prod"
-                    },
-                    "enable_features": [
-                        "FederatedLauncherQueryAnalyticsTask"
-                    ]
-                }
-            ]
-        }
-    ],
     "CrOSFederatedLauncherQueryPhhVersion2": [
         {
             "platforms": [
@@ -5187,24 +6148,6 @@
             ]
         }
     ],
-    "CrOSFederatedTimezoneCodePhh": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "params": {
-                        "launch_stage": "prod"
-                    },
-                    "enable_features": [
-                        "FederatedTimezoneCodePhh"
-                    ]
-                }
-            ]
-        }
-    ],
     "CrOSLateBootAllowFirmwareDumps": [
         {
             "platforms": [
@@ -5360,76 +6303,111 @@
             ],
             "experiments": [
                 {
-                    "name": "EnabledEarlyDiscard",
-                    "enable_features": [
-                        "CrOSLateBootDiscardStaleAtModeratePressure"
-                    ]
-                },
-                {
-                    "name": "EnabledEarlyDiscardConservativeGradient",
+                    "name": "EnabledEarlyDiscard_20240605",
                     "params": {
-                        "MaxLastVisibleDurationSeconds": "7200",
-                        "MinLastVisibleDurationSeconds": "3600"
+                        "CompleteStallMs": "700",
+                        "PartialStallMs": "20"
                     },
                     "enable_features": [
-                        "CrOSLateBootDiscardStaleAtModeratePressure"
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootPsiAdjustAvailable",
+                        "CrOSLockMainProgramText"
                     ]
                 },
                 {
-                    "name": "EnabledEarlyDiscardAggressiveGradient",
+                    "name": "EnabledEarlyDiscardAggressiveGradient_20240605",
                     "params": {
+                        "CompleteStallMs": "700",
                         "MaxLastVisibleDurationSeconds": "3600",
-                        "MinLastVisibleDurationSeconds": "300"
+                        "MinLastVisibleDurationSeconds": "300",
+                        "PartialStallMs": "20"
                     },
                     "enable_features": [
-                        "CrOSLateBootDiscardStaleAtModeratePressure"
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootPsiAdjustAvailable",
+                        "CrOSLockMainProgramText"
                     ]
                 },
                 {
-                    "name": "EnabledAvailableAdjustmentPsi",
+                    "name": "EnabledAvailableAdjustmentPsi_20240605",
                     "enable_features": [
                         "CrOSLateBootPsiAdjustAvailable"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults",
+                        "CrOSLockMainProgramText"
                     ]
                 },
                 {
-                    "name": "EnabledAvailableAdjustmentPsiFull",
+                    "name": "EnabledAvailableAdjustmentPsiFull_20240605",
                     "params": {
                         "PsiTopThreshold": "20.0",
                         "PsiUseFull": "true"
                     },
                     "enable_features": [
                         "CrOSLateBootPsiAdjustAvailable"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults",
+                        "CrOSLockMainProgramText"
                     ]
                 },
                 {
-                    "name": "EnabledAvailableAdjustmentPsiWithEarlyDiscard",
+                    "name": "EnabledAvailableAdjustmentPsiWithEarlyDiscard_20240605",
+                    "params": {
+                        "CompleteStallMs": "700",
+                        "PartialStallMs": "20"
+                    },
                     "enable_features": [
                         "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults",
                         "CrOSLateBootPsiAdjustAvailable"
+                    ],
+                    "disable_features": [
+                        "CrOSLockMainProgramText"
                     ]
                 },
                 {
-                    "name": "EnabledPSIMemoryPolicy",
+                    "name": "EnabledMlockChrome_20240605",
                     "enable_features": [
-                        "CrOSLateBootPSIMemoryPolicy"
+                        "CrOSLockMainProgramText"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults",
+                        "CrOSLateBootPsiAdjustAvailable"
                     ]
                 },
                 {
-                    "name": "EnabledPSIMemoryPolicyConservativeGradient",
-                    "params": {
-                        "BackgroundPsiSomeMillis": "200",
-                        "ForegroundPsiFullMillis": "100",
-                        "UnresponsivePsiFullMillis": "700"
-                    },
+                    "name": "EnabledMlockChromeWithAvailableAdjustmentPsi_20240605",
                     "enable_features": [
-                        "CrOSLateBootPSIMemoryPolicy"
+                        "CrOSLateBootPsiAdjustAvailable",
+                        "CrOSLockMainProgramText"
+                    ],
+                    "disable_features": [
+                        "CrOSLateBootDiscardStaleAtModeratePressure",
+                        "CrOSLateBootOverrideLmkdPsiDefaults"
                     ]
                 },
                 {
-                    "name": "EnabledPSIMemoryPolicyWithEarlyDiscard",
+                    "name": "EnabledAvailableAdjustmentPsiWithEarlyDiscardAndMlockChrome_20240605",
+                    "params": {
+                        "CompleteStallMs": "700",
+                        "PartialStallMs": "20"
+                    },
                     "enable_features": [
                         "CrOSLateBootDiscardStaleAtModeratePressure",
-                        "CrOSLateBootPSIMemoryPolicy"
+                        "CrOSLateBootOverrideLmkdPsiDefaults",
+                        "CrOSLateBootPsiAdjustAvailable",
+                        "CrOSLockMainProgramText"
                     ]
                 }
             ]
@@ -5541,18 +6519,40 @@
                     "name": "Enabled",
                     "enable_features": [
                         "LauncherImageSearch",
-                        "LauncherImageSearchIca",
+                        "LauncherImageSearchIndexingLimit",
+                        "LauncherImageSearchOcr",
+                        "LauncherSearchControl",
+                        "ProductivityLauncherImageSearch"
+                    ]
+                },
+                {
+                    "name": "Enabled_20240516",
+                    "enable_features": [
+                        "LauncherImageSearch",
+                        "LauncherImageSearchIndexingLimit",
+                        "LauncherImageSearchOcr",
+                        "LauncherSearchControl",
+                        "ProductivityLauncherImageSearch"
+                    ]
+                },
+                {
+                    "name": "Disabled_20240516",
+                    "disable_features": [
+                        "LauncherImageSearch",
+                        "LauncherImageSearchIndexingLimit",
                         "LauncherImageSearchOcr",
                         "LauncherSearchControl",
                         "ProductivityLauncherImageSearch"
                     ]
                 },
                 {
-                    "name": "Enabled_ocronly",
+                    "name": "EnabledOnCore",
                     "enable_features": [
                         "LauncherImageSearch",
+                        "LauncherImageSearchIndexingLimit",
                         "LauncherImageSearchOcr",
                         "LauncherSearchControl",
+                        "LocalImageSearchOnCore",
                         "ProductivityLauncherImageSearch"
                     ]
                 }
@@ -5577,22 +6577,21 @@
             ]
         }
     ],
-    "CreateNotificationsAcceptedClientSafeBrowsingReports": [
+    "CrabbyAvif": [
         {
             "platforms": [
                 "android",
                 "android_webview",
                 "chromeos",
-                "chromeos_lacros",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_CrabbyAvif",
                     "enable_features": [
-                        "CreateNotificationsAcceptedClientSafeBrowsingReports"
+                        "CrabbyAvif"
                     ]
                 }
             ]
@@ -5613,27 +6612,6 @@
             ]
         }
     ],
-    "CreateWarningShownClientSafeBrowsingReports": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "CreateWarningShownClientSafeBrowsingReports"
-                    ]
-                }
-            ]
-        }
-    ],
     "CreditCardInfobarDisplayLength": [
         {
             "platforms": [
@@ -5702,6 +6680,28 @@
             ]
         }
     ],
+    "CssRubyAlign": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "CssRubyAlign"
+                    ]
+                }
+            ]
+        }
+    ],
     "CursiveManagedStylusPreinstall": [
         {
             "platforms": [
@@ -5767,6 +6767,26 @@
             ]
         }
     ],
+    "DIPSDisablePrepopulation": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "DipsPrepopulation"
+                    ]
+                }
+            ]
+        }
+    ],
     "DIPSStatefulBounceEnforcement": [
         {
             "platforms": [
@@ -5829,6 +6849,25 @@
             ]
         }
     ],
+    "DataControlsDesktop": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "EnableDesktopDataControls"
+                    ]
+                }
+            ]
+        }
+    ],
     "DbscPhase1aStudy": [
         {
             "platforms": [
@@ -5871,6 +6910,29 @@
             ]
         }
     ],
+    "DecommitPooledPages": [
+        {
+            "platforms": [
+                "android",
+                "android_weblayer",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "DecommitPooledPages"
+                    ]
+                }
+            ]
+        }
+    ],
     "DecreaseProcessingAudioFifoSize": [
         {
             "platforms": [
@@ -5913,13 +6975,14 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled1",
+                    "name": "V2Enabled1_20240516",
                     "params": {
-                        "group_name": "enabled-arm-1",
+                        "group_name": "enabled-v2-arm-1",
                         "max_prompt_count": "5",
-                        "reprompt_duration": "7d",
-                        "reprompt_duration_multiplier ": "2",
+                        "reprompt_duration": "21d",
+                        "reprompt_duration_multiplier": "1",
                         "show_app_menu_chip": "false",
+                        "show_app_menu_item": "false",
                         "show_info_bar": "true",
                         "updated_info_bar_copy": "true"
                     },
@@ -6097,6 +7160,23 @@
             ]
         }
     ],
+    "DesktopCapturePermissionChecker": [
+        {
+            "platforms": [
+                "mac"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_SckPicker_20240522",
+                    "enable_features": [
+                        "DesktopCapturePermissionChecker",
+                        "ScreenCaptureKitPickerScreen",
+                        "ScreenCaptureKitStreamPickerSonoma"
+                    ]
+                }
+            ]
+        }
+    ],
     "DesktopLinkCapturingPWAExperiment": [
         {
             "platforms": [
@@ -6257,25 +7337,6 @@
             ]
         }
     ],
-    "DesktopOmniboxMLScoringWithCaching": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "MlUrlScoreCaching"
-                    ]
-                }
-            ]
-        }
-    ],
     "DesktopOmniboxMLScoringWithLinearMapping": [
         {
             "platforms": [
@@ -6438,7 +7499,9 @@
             "platforms": [
                 "linux",
                 "mac",
-                "windows"
+                "windows",
+                "chromeos",
+                "chromeos_lacros"
             ],
             "experiments": [
                 {
@@ -6559,6 +7622,21 @@
             ]
         }
     ],
+    "DeviceAuthenticatorAndroidx": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "DeviceAuthenticatorAndroidx"
+                    ]
+                }
+            ]
+        }
+    ],
     "DexFixer": [
         {
             "platforms": [
@@ -6612,10 +7690,9 @@
             ],
             "experiments": [
                 {
-                    "name": "ConnecMigrationAndBlackhole_20231106",
+                    "name": "Enabled",
                     "enable_features": [
-                        "DisableBlackHoleOnNoNewNetwork",
-                        "MigrateSessionsOnNetworkChangeV2"
+                        "DisableBlackHoleOnNoNewNetwork"
                     ]
                 }
             ]
@@ -6655,6 +7732,22 @@
             ]
         }
     ],
+    "DisableMemoryReclaimerInBackground": [
+        {
+            "platforms": [
+                "android",
+                "android_webview"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "DisableMemoryReclaimerInBackground"
+                    ]
+                }
+            ]
+        }
+    ],
     "DisableUrgentPageDiscarding": [
         {
             "platforms": [
@@ -6834,32 +7927,6 @@
             ]
         }
     ],
-    "DnsOverHttpsUi": [
-        {
-            "platforms": [
-                "android",
-                "android_weblayer",
-                "chromeos",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "EnabledLaunch",
-                    "params": {
-                        "DisabledProviders": "Quad9Secure",
-                        "ShowUi": "true"
-                    },
-                    "enable_features": [
-                        "DnsOverHttps",
-                        "DnsOverHttpsUpgrade"
-                    ]
-                }
-            ]
-        }
-    ],
     "DoNotEvictOnAXLocationChange": [
         {
             "platforms": [
@@ -6933,6 +8000,86 @@
             ]
         }
     ],
+    "DownloadWarningSurvey": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "DownloadBubbleBypass_20240513",
+                    "params": {
+                        "en_site_id": "ikozJtokP0ugnJ3q1cK0SbwHjMKE",
+                        "probability": "1.0",
+                        "survey_type": "0"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                },
+                {
+                    "name": "DownloadBubbleHeed_20240513",
+                    "params": {
+                        "en_site_id": "jhF4CtEp50ugnJ3q1cK0UZhzeE9d",
+                        "probability": "1.0",
+                        "survey_type": "1"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                },
+                {
+                    "name": "DownloadBubbleIgnore_20240513",
+                    "params": {
+                        "en_site_id": "QGZEf3nUW0ugnJ3q1cK0PoGTrYqX",
+                        "ignore_delay_seconds": "300",
+                        "probability": "0.5",
+                        "survey_type": "2"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                },
+                {
+                    "name": "DownloadsPageBypass_20240513",
+                    "params": {
+                        "en_site_id": "B4TxfW2d50ugnJ3q1cK0SrBjxPp9",
+                        "probability": "1.0",
+                        "survey_type": "3"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                },
+                {
+                    "name": "DownloadsPageHeed_20240513",
+                    "params": {
+                        "en_site_id": "P1UCDjb5L0ugnJ3q1cK0S1YhAs9h",
+                        "probability": "1.0",
+                        "survey_type": "4"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                },
+                {
+                    "name": "DownloadsPageIgnore_20240513",
+                    "params": {
+                        "en_site_id": "ToBgFcctL0ugnJ3q1cK0UoPbrdFt",
+                        "probability": "0.5",
+                        "survey_type": "5"
+                    },
+                    "enable_features": [
+                        "DownloadWarningSurvey"
+                    ]
+                }
+            ]
+        }
+    ],
     "DownloadsMigrateToJobsAPI": [
         {
             "platforms": [
@@ -6985,6 +8132,67 @@
             ]
         }
     ],
+    "ESBDownloadRowPromo": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "availability": "any",
+                        "blocked_by": "none",
+                        "blocking": "none",
+                        "event_1": "name:esb_download_promo_row_viewed;comparator:<7;window:90;storage:90",
+                        "event_2": "name:esb_download_promo_row_clicked;comparator:<3;window:90;storage:90",
+                        "event_trigger": "name:dangerous_download_esb_promo_row_trigger;comparator:any;window:360;storage:360",
+                        "event_used": "name:enable_enhanced_protection;comparator:==0;window:21;storage:90",
+                        "session_rate": "any",
+                        "session_rate_impact": "none"
+                    },
+                    "enable_features": [
+                        "EsbDownloadRowPromo"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ESBInfobarPromo": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "EnhancedSafeBrowsingPromo"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ESBInlineSettingsPromo": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "IPH_iOSInlineEnhancedSafeBrowsingPromo"
+                    ]
+                }
+            ]
+        }
+    ],
     "EagerPrefetchBlockUntilHeadDifferentTimeoutsRetrospective": [
         {
             "platforms": [
@@ -7119,21 +8327,6 @@
             ]
         }
     ],
-    "EnableBookmarkFoldersForAccountStorage": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "EnableBookmarkFoldersForAccountStorage"
-                    ]
-                }
-            ]
-        }
-    ],
     "EnableConfigurableThreadCacheMultiplier": [
         {
             "platforms": [
@@ -7190,6 +8383,51 @@
             ]
         }
     ],
+    "EnableCustomInputStreamBufferSize": [
+        {
+            "platforms": [
+                "android_webview"
+            ],
+            "experiments": [
+                {
+                    "name": "EnabledWith64KiBMay2024",
+                    "params": {
+                        "BufferSize": "65536"
+                    },
+                    "enable_features": [
+                        "EnableCustomInputStreamBufferSize"
+                    ]
+                },
+                {
+                    "name": "EnabledWith32KiBMay2024",
+                    "params": {
+                        "BufferSize": "32768"
+                    },
+                    "enable_features": [
+                        "EnableCustomInputStreamBufferSize"
+                    ]
+                },
+                {
+                    "name": "EnabledWith16KiBMay2024",
+                    "params": {
+                        "BufferSize": "16384"
+                    },
+                    "enable_features": [
+                        "EnableCustomInputStreamBufferSize"
+                    ]
+                },
+                {
+                    "name": "EnabledWith8KiBMay2024",
+                    "params": {
+                        "BufferSize": "8192"
+                    },
+                    "enable_features": [
+                        "EnableCustomInputStreamBufferSize"
+                    ]
+                }
+            ]
+        }
+    ],
     "EnableDevToolsJsErrorReporting": [
         {
             "platforms": [
@@ -7393,64 +8631,61 @@
             ]
         }
     ],
-    "EnableReportingMultigenerationStorage": [
+    "EnableSessionSerializationOptimizations": [
         {
             "platforms": [
-                "chromeos"
+                "ios"
             ],
             "experiments": [
                 {
-                    "name": "PartiallyEnabled",
-                    "params": {
-                        "legacy_storage": "IMMEDIATE,SECURITY"
-                    },
+                    "name": "Enabled",
                     "enable_features": [
-                        "CrOSLateBootMissiveStorage"
+                        "EnableSessionSerializationOptimizations"
                     ]
                 }
             ]
         }
     ],
-    "EnableSessionSerializationOptimizations": [
+    "EnableShoppingListIOSM119": [
         {
             "platforms": [
                 "ios"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_20231112",
                     "enable_features": [
-                        "EnableSessionSerializationOptimizations"
+                        "ShoppingList"
                     ]
                 }
             ]
         }
     ],
-    "EnableShoppingListIOSM119": [
+    "EnableTcpPortRandomization": [
         {
             "platforms": [
-                "ios"
+                "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20231112",
+                    "name": "Enabled",
                     "enable_features": [
-                        "ShoppingList"
+                        "EnableTcpPortRandomization"
                     ]
                 }
             ]
         }
     ],
-    "EnableTcpPortRandomization": [
+    "EnableVkPipelineCache": [
         {
             "platforms": [
-                "windows"
+                "android"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "EnableTcpPortRandomization"
+                        "EnableVkPipelineCache"
                     ]
                 }
             ]
@@ -7544,18 +8779,30 @@
             ]
         }
     ],
-    "EventTimingFallbackToModalDialogStart": [
+    "EstablishGpuChannelChanges": [
         {
             "platforms": [
-                "android",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
                 "linux",
                 "mac",
-                "windows",
-                "android_webview",
-                "android_weblayer"
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "EstablishGpuChannelChanges",
+                    "enable_features": [
+                        "EarlyEstablishGpuChannel",
+                        "EstablishGpuChannelAsync"
+                    ]
+                }
+            ]
+        }
+    ],
+    "EventTimingFallbackToModalDialogStart": [
+        {
+            "platforms": [
+                "android_webview"
             ],
             "experiments": [
                 {
@@ -7593,15 +8840,7 @@
     "EventTimingKeypressAndCompositionInteractionId": [
         {
             "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows",
-                "android_webview",
-                "android_weblayer"
+                "android_webview"
             ],
             "experiments": [
                 {
@@ -7683,7 +8922,6 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "ComposeSettingsVisibility",
                         "TabOrganizationSettingsVisibility"
                     ]
                 }
@@ -7710,6 +8948,25 @@
             ]
         }
     ],
+    "ExtensionManifestV2Deprecation": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_WarningOnly",
+                    "enable_features": [
+                        "ExtensionManifestV2DeprecationWarning"
+                    ]
+                }
+            ]
+        }
+    ],
     "ExtensionPageHats": [
         {
             "platforms": [
@@ -7854,6 +9111,21 @@
             ]
         }
     ],
+    "ExternalBeginFrameSourceWinUsesRunOrPostTask": [
+        {
+            "platforms": [
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ExternalBeginFrameSourceWinUsesRunOrPostTask"
+                    ]
+                }
+            ]
+        }
+    ],
     "ExternalHDR10": [
         {
             "platforms": [
@@ -8193,6 +9465,26 @@
             ]
         }
     ],
+    "FencedFramesEnableReportEventHeaderChanges": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "FencedFramesReportEventHeaderChanges"
+                    ]
+                }
+            ]
+        }
+    ],
     "FenderAutoPreconnectLcpOrigins": [
         {
             "platforms": [
@@ -8256,27 +9548,6 @@
             ]
         }
     ],
-    "FillScrollingContentsLayer": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "FillScrollingContentsLayer"
-                    ]
-                }
-            ]
-        }
-    ],
     "FindRegistrationImprovements": [
         {
             "platforms": [
@@ -8679,6 +9950,21 @@
             ]
         }
     ],
+    "GlobalVaapiLock": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "GlobalVaapiLock"
+                    ]
+                }
+            ]
+        }
+    ],
     "GoogleLensDesktopContentMenuTranslate": [
         {
             "platforms": [
@@ -8808,52 +10094,6 @@
             ]
         }
     ],
-    "GoogleOneOfferStudy": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "NotificationOnly_20230216",
-                    "params": {
-                        "availability": ">=0",
-                        "event_trigger": "name:google_one_offer_iph_notification_shown;comparator:==0;window:365;storage:365",
-                        "event_used": "name:google_one_offer_iph_notification_get_perk;comparator:any;window:365;storage:365",
-                        "session_rate": "<1"
-                    },
-                    "enable_features": [
-                        "IPH_GoogleOneOfferNotification"
-                    ],
-                    "disable_features": [
-                        "GoogleOneOfferFilesBanner"
-                    ]
-                },
-                {
-                    "name": "FilesBannerOnly_20230216",
-                    "enable_features": [
-                        "GoogleOneOfferFilesBanner"
-                    ],
-                    "disable_features": [
-                        "IPH_GoogleOneOfferNotification"
-                    ]
-                },
-                {
-                    "name": "NotificationAndFilesBanner_20230216",
-                    "params": {
-                        "availability": ">=0",
-                        "event_trigger": "name:google_one_offer_iph_notification_shown;comparator:==0;window:365;storage:365",
-                        "event_used": "name:google_one_offer_iph_notification_get_perk;comparator:any;window:365;storage:365",
-                        "session_rate": "<1"
-                    },
-                    "enable_features": [
-                        "GoogleOneOfferFilesBanner",
-                        "IPH_GoogleOneOfferNotification"
-                    ]
-                }
-            ]
-        }
-    ],
     "GoogleTtsWithLanguagePacks": [
         {
             "platforms": [
@@ -8909,7 +10149,7 @@
             ]
         }
     ],
-    "GwpAsanAndroidLargerBrowserReservation": [
+    "GwpAsanAndroid2024": [
         {
             "platforms": [
                 "android",
@@ -8931,7 +10171,7 @@
             ]
         }
     ],
-    "GwpAsanLargerBrowserReservation": [
+    "GwpAsanDesktop2024": [
         {
             "platforms": [
                 "chromeos",
@@ -9506,6 +10746,27 @@
             ]
         }
     ],
+    "HeapProfilingCentralControl": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "HeapProfilerCentralControl"
+                    ]
+                }
+            ]
+        }
+    ],
     "HelpAppAppsDiscoveryV2": [
         {
             "platforms": [
@@ -9557,22 +10818,6 @@
             ]
         }
     ],
-    "HelpAppOpensInsteadOfReleaseNotesNotification": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "HelpAppOpensInsteadOfReleaseNotesNotification"
-                    ]
-                }
-            ]
-        }
-    ],
     "HideDelegatedFrameHostMac": [
         {
             "platforms": [
@@ -9712,6 +10957,26 @@
             ]
         }
     ],
+    "HttpsFirstModeIncognitoPhase1": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "HttpsFirstModeIncognito"
+                    ]
+                }
+            ]
+        }
+    ],
     "HttpsFirstModeV2ForTypicallySecureUsers": [
         {
             "platforms": [
@@ -9761,37 +11026,100 @@
                 {
                     "name": "Enabled_CanaryDev",
                     "enable_features": [
-                        "OnlyAccessClipboardAsync"
+                        "OnlyAccessClipboardAsync"
+                    ]
+                }
+            ]
+        }
+    ],
+    "IOSBackgroundRefresh": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_20220908",
+                    "enable_features": [
+                        "EnableFeedBackgroundRefresh"
+                    ]
+                }
+            ]
+        }
+    ],
+    "IOSBrowserEditMenuMetrics": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "IOSBrowserEditMenuMetrics"
+                    ]
+                }
+            ]
+        }
+    ],
+    "IOSContentNotification": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_Promo",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "1"
+                    },
+                    "enable_features": [
+                        "ContentPushNotifications"
+                    ]
+                },
+                {
+                    "name": "Registered_Promo",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "5"
+                    },
+                    "enable_features": [
+                        "ContentPushNotifications"
+                    ]
+                },
+                {
+                    "name": "Enabled_Provisional",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "3"
+                    },
+                    "enable_features": [
+                        "ContentPushNotifications"
+                    ]
+                },
+                {
+                    "name": "Registered_Provisional",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "6"
+                    },
+                    "enable_features": [
+                        "ContentPushNotifications"
                     ]
-                }
-            ]
-        }
-    ],
-    "IOSBackgroundRefresh": [
-        {
-            "platforms": [
-                "ios"
-            ],
-            "experiments": [
+                },
                 {
-                    "name": "Enabled_20220908",
+                    "name": "Enabled_Setuplist",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "2"
+                    },
                     "enable_features": [
-                        "EnableFeedBackgroundRefresh"
+                        "ContentPushNotifications"
                     ]
-                }
-            ]
-        }
-    ],
-    "IOSBrowserEditMenuMetrics": [
-        {
-            "platforms": [
-                "ios"
-            ],
-            "experiments": [
+                },
                 {
-                    "name": "Enabled",
+                    "name": "Registered_Setuplist",
+                    "params": {
+                        "ContentPushNotificationsExperimentType": "7"
+                    },
                     "enable_features": [
-                        "IOSBrowserEditMenuMetrics"
+                        "ContentPushNotifications"
                     ]
                 }
             ]
@@ -9887,7 +11215,7 @@
             ]
         }
     ],
-    "IOSDownloadNoUIUpdateInBackground": [
+    "IOSEnableColorLensAndVoiceIconsInHomeScreenWidget": [
         {
             "platforms": [
                 "ios"
@@ -9896,13 +11224,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "IOSDownloadNoUIUpdateInBackground"
+                        "kEnableColorLensAndVoiceIconsInHomeScreenWidget"
                     ]
                 }
             ]
         }
     ],
-    "IOSEnableColorLensAndVoiceIconsInHomeScreenWidget": [
+    "IOSFastApplicationWillTerminate": [
         {
             "platforms": [
                 "ios"
@@ -9911,13 +11239,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "kEnableColorLensAndVoiceIconsInHomeScreenWidget"
+                        "FastApplicationWillTerminate"
                     ]
                 }
             ]
         }
     ],
-    "IOSFastApplicationWillTerminate": [
+    "IOSFeatureEngagementSessionReset": [
         {
             "platforms": [
                 "ios"
@@ -9926,13 +11254,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "FastApplicationWillTerminate"
+                        "FeatureEngagementSessionReset"
                     ]
                 }
             ]
         }
     ],
-    "IOSFeatureEngagementSessionReset": [
+    "IOSFeedCUI1Refinements": [
         {
             "platforms": [
                 "ios"
@@ -9941,13 +11269,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "FeatureEngagementSessionReset"
+                        "EnableCUI1Refinements"
                     ]
                 }
             ]
         }
     ],
-    "IOSFeedContainment": [
+    "IOSFeedCUI3NextPageAppFlow": [
         {
             "platforms": [
                 "ios"
@@ -9955,26 +11283,26 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "HomeModuleMinimumPadding": "8"
-                    },
                     "enable_features": [
-                        "EnableFeedContainment"
+                        "EnableCUI3NextPageAppFlow"
                     ]
                 }
             ]
         }
     ],
-    "IOSFeedSignedOutViewDemotion": [
+    "IOSFeedContainment": [
         {
             "platforms": [
                 "ios"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_Feed_View_Demotion",
+                    "name": "Enabled",
+                    "params": {
+                        "HomeModuleMinimumPadding": "8"
+                    },
                     "enable_features": [
-                        "EnableSignedOutViewDemotion"
+                        "EnableFeedContainment"
                     ]
                 }
             ]
@@ -10163,8 +11491,9 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_20240523",
                     "enable_features": [
+                        "IOSDownloadNoUIUpdateInBackground",
                         "IOSSaveToDrive"
                     ]
                 }
@@ -10216,6 +11545,24 @@
             ]
         }
     ],
+    "IOSStart4Hour": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled4Hour",
+                    "params": {
+                        "ReturnToStartSurfaceInactiveDurationInSeconds": "14400"
+                    },
+                    "enable_features": [
+                        "StartSurface"
+                    ]
+                }
+            ]
+        }
+    ],
     "IOSStickyAutofillAndPasswordInfobars": [
         {
             "platforms": [
@@ -10325,21 +11672,6 @@
             ]
         }
     ],
-    "IOSUnifiedBookmarkModel": [
-        {
-            "platforms": [
-                "ios"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "EnableBookmarkFoldersForAccountStorage"
-                    ]
-                }
-            ]
-        }
-    ],
     "IOSUseUserDefaultsForExitedCleanlyBeacon": [
         {
             "platforms": [
@@ -10417,37 +11749,29 @@
             ]
         }
     ],
-    "IdentifiabilityStudy": [
+    "ImageDescriptionsAlternativeRouting": [
         {
             "platforms": [
                 "android",
-                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "EnableMetaExperiment",
-                    "params": {
-                        "AllowedRandomTypes": "0",
-                        "Gen": "10",
-                        "Rho": "1"
-                    },
+                    "name": "Enabled",
                     "enable_features": [
-                        "IdentifiabilityStudy"
+                        "ImageDescriptionsAlternativeRouting"
                     ]
                 }
             ]
         }
     ],
-    "ImageDescriptionsAlternativeRouting": [
+    "ImprovedSemanticsActivityIndicators": [
         {
             "platforms": [
-                "android",
                 "chromeos",
                 "chromeos_lacros",
                 "linux",
@@ -10458,13 +11782,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "ImageDescriptionsAlternativeRouting"
+                        "ImprovedSemanticsActivityIndicators"
                     ]
                 }
             ]
         }
     ],
-    "ImprovedSemanticsActivityIndicators": [
+    "IncludeJSCallStackInExtensionApiRequestStudy": [
         {
             "platforms": [
                 "chromeos",
@@ -10477,7 +11801,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "ImprovedSemanticsActivityIndicators"
+                        "IncludeJSCallStackInExtensionApiRequest"
                     ]
                 }
             ]
@@ -10727,29 +12051,6 @@
             ]
         }
     ],
-    "IsolateSandboxedIframes": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "EnabledWithPerOrigin_20230713",
-                    "params": {
-                        "grouping": "per-origin"
-                    },
-                    "enable_features": [
-                        "IsolateSandboxedIframes"
-                    ]
-                }
-            ]
-        }
-    ],
     "IsolatedWebApps": [
         {
             "platforms": [
@@ -10948,6 +12249,12 @@
                     "enable_features": [
                         "KeyboardFocusableScrollers"
                     ]
+                },
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "KeyboardFocusableScrollers"
+                    ]
                 }
             ]
         }
@@ -11252,6 +12559,26 @@
             ]
         }
     ],
+    "LazyBlinkTimezoneInit": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "LazyBlinkTimezoneInit"
+                    ]
+                }
+            ]
+        }
+    ],
     "LeakSkiaEventTracerAtExit": [
         {
             "platforms": [
@@ -11293,6 +12620,28 @@
             ]
         }
     ],
+    "LevelDBProtoAsyncWrite": [
+        {
+            "platforms": [
+                "android_webview",
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "LevelDBProtoAsyncWrite"
+                    ]
+                }
+            ]
+        }
+    ],
     "LightweightUAFDetector": [
         {
             "platforms": [
@@ -11359,6 +12708,29 @@
             ]
         }
     ],
+    "LinkedServicesSetting": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "ios",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "LinkedServicesSetting",
+                        "LinkedServicesSettingIos"
+                    ]
+                }
+            ]
+        }
+    ],
     "LiveCaptionChromeOS2": [
         {
             "platforms": [
@@ -11386,7 +12758,7 @@
                 {
                     "name": "Enabled",
                     "params": {
-                        "available_languages": "en-US,fr-FR,it-IT,de-DE,es-ES,ja-JP,hi-IN,pt-BR,ko-KR,pl-PL,th-TH,tr-TR,id-ID,cmn-Hans-CN,cmn-Hant-TW"
+                        "available_languages": "en-US,fr-FR,it-IT,de-DE,es-ES,ja-JP,hi-IN,pt-BR,ko-KR,pl-PL,th-TH,tr-TR,id-ID,cmn-Hans-CN,cmn-Hant-TW,vi-VN,ru-RU"
                     },
                     "enable_features": [
                         "LiveCaptionExperimentalLanguages"
@@ -11650,7 +13022,8 @@
                 {
                     "name": "MahiEnabled",
                     "enable_features": [
-                        "Mahi"
+                        "Mahi",
+                        "MediaAppPdfMahi"
                     ]
                 }
             ]
@@ -11672,25 +13045,6 @@
             ]
         }
     ],
-    "MaldocaSkipCheck": [
-        {
-            "platforms": [
-                "chromeos",
-                "linux",
-                "mac",
-                "windows",
-                "chromeos_lacros"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "MaldocaSkipCheck"
-                    ]
-                }
-            ]
-        }
-    ],
     "MaxNumDelayableRequestsPerHostPerClient": [
         {
             "platforms": [
@@ -11714,25 +13068,6 @@
             ]
         }
     ],
-    "MediaContextMenuSearchForVideoFrame": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "ContextMenuSearchForVideoFrame"
-                    ]
-                }
-            ]
-        }
-    ],
     "MediaDeviceIdStoragePartitioning": [
         {
             "platforms": [
@@ -11770,22 +13105,25 @@
             ]
         }
     ],
-    "MediaFoundationCameraUsageMonitoring": [
+    "MediaFoundationBatchRead": [
         {
             "platforms": [
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_200",
+                    "params": {
+                        "batch_read_count": "200"
+                    },
                     "enable_features": [
-                        "MediaFoundationCameraUsageMonitoring"
+                        "MediaFoundationBatchRead"
                     ]
                 }
             ]
         }
     ],
-    "MediaFoundationD3D11VideoCapture": [
+    "MediaFoundationCameraUsageMonitoring": [
         {
             "platforms": [
                 "windows"
@@ -11794,7 +13132,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "MediaFoundationD3D11VideoCapture"
+                        "MediaFoundationCameraUsageMonitoring"
                     ]
                 }
             ]
@@ -11815,21 +13153,6 @@
             ]
         }
     ],
-    "MediaFoundationVP9L1T2Support": [
-        {
-            "platforms": [
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "MediaFoundationVP9L1T2Support"
-                    ]
-                }
-            ]
-        }
-    ],
     "MediaHardwareSecureDecryption": [
         {
             "platforms": [
@@ -12099,35 +13422,15 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "MigrateAlwaysTranslateLanguagesFix"
-                    ]
-                }
-            ]
-        }
-    ],
-    "MigrateDefaultChromeAppToWebAppsGSuite": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled_20210111",
+                    "name": "Enabled",
                     "enable_features": [
-                        "MigrateDefaultChromeAppToWebAppsGSuite"
+                        "MigrateAlwaysTranslateLanguagesFix"
                     ]
                 }
             ]
         }
     ],
-    "MigrateDefaultChromeAppToWebAppsNonGSuite": [
+    "MigrateDefaultChromeAppToWebAppsGSuite": [
         {
             "platforms": [
                 "chromeos",
@@ -12141,42 +13444,27 @@
                 {
                     "name": "Enabled_20210111",
                     "enable_features": [
-                        "MigrateDefaultChromeAppToWebAppsNonGSuite"
-                    ]
-                }
-            ]
-        }
-    ],
-    "MinorModeRestrictionsForHistorySyncOptInAndroidStudy": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "LowDeadline",
-                    "enable_features": [
-                        "MinorModeRestrictionsForHistorySyncOptIn"
+                        "MigrateDefaultChromeAppToWebAppsGSuite"
                     ]
                 }
             ]
         }
     ],
-    "MinorModeRestrictionsForHistorySyncOptInDesktopStudy": [
+    "MigrateDefaultChromeAppToWebAppsNonGSuite": [
         {
             "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "LowDeadlineWithPreconnect_20240411",
-                    "params": {
-                        "MinorModeRestrictionsFetchDeadlineMs": "400"
-                    },
+                    "name": "Enabled_20210111",
                     "enable_features": [
-                        "MinorModeRestrictionsForHistorySyncOptIn"
+                        "MigrateDefaultChromeAppToWebAppsNonGSuite"
                     ]
                 }
             ]
@@ -12189,15 +13477,14 @@
             ],
             "experiments": [
                 {
-                    "name": "Deadline2000_WithoutSystem_WithPrefetch_20240430_M124+",
+                    "name": "Deadline250_WithSystem_WithPrefetch_20240604_M125+",
                     "params": {
-                        "MinorModeRestrictionsFetchDeadlineMs": "2000"
+                        "FetchImmediatelyAvailableCapabilityDeadlineMs": "100",
+                        "MinorModeRestrictionsFetchDeadlineMs": "250"
                     },
                     "enable_features": [
                         "MinorModeRestrictionsForHistorySyncOptIn",
-                        "PrefetchSystemCapabilitiesOnFirstRun"
-                    ],
-                    "disable_features": [
+                        "PrefetchSystemCapabilitiesOnFirstRun",
                         "UseSystemCapabilitiesForMinorModeRestrictions"
                     ]
                 }
@@ -12245,6 +13532,28 @@
             ]
         }
     ],
+    "MojoChannelAssociatedCrashesOnSendError": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "MojoChannelAssociatedCrashesOnSendError"
+                    ]
+                }
+            ]
+        }
+    ],
     "MojoChannelAssociatedSendUsesRunOrPostTask": [
         {
             "platforms": [
@@ -12447,7 +13756,7 @@
             ]
         }
     ],
-    "NavBarColorMatchesTabBackground": [
+    "NavBarColorMatchesTabBackgroundAndroid": [
         {
             "platforms": [
                 "android"
@@ -12469,9 +13778,9 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240503",
+                    "name": "Enabled_20240522",
                     "params": {
-                        "intersection_observer_delay": "500ms",
+                        "intersection_observer_delay": "1000ms",
                         "max_intersection_observations": "345",
                         "random_anchor_sampling_period": "1"
                     },
@@ -12482,6 +13791,21 @@
             ]
         }
     ],
+    "NearbyBleV2": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "EnableNearbyBleV2"
+                    ]
+                }
+            ]
+        }
+    ],
     "NearbyShareNameEnabled": [
         {
             "platforms": [
@@ -12680,6 +14004,24 @@
             ]
         }
     ],
+    "NonModalPromoCooldownSeparation": [
+        {
+            "platforms": [
+                "ios"
+            ],
+            "experiments": [
+                {
+                    "name": "CooldownDays14_2024_06_02",
+                    "params": {
+                        "cooldown-days": "14"
+                    },
+                    "enable_features": [
+                        "NonModalDefaultBrowserPromoCooldownRefactor"
+                    ]
+                }
+            ]
+        }
+    ],
     "NonStandardAppearanceValueSliderVertical": [
         {
             "platforms": [
@@ -12789,21 +14131,6 @@
             ]
         }
     ],
-    "NotificationGesturesUpdate": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "NotificationGesturesUpdate"
-                    ]
-                }
-            ]
-        }
-    ],
     "NotificationOneTapUnsubscribe": [
         {
             "platforms": [
@@ -12835,27 +14162,6 @@
             ]
         }
     ],
-    "NotifierCollision": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled_20230907_Dogfood",
-                    "enable_features": [
-                        "NotifierCollision"
-                    ]
-                },
-                {
-                    "name": "Enabled_20230907",
-                    "enable_features": [
-                        "NotifierCollision"
-                    ]
-                }
-            ]
-        }
-    ],
     "NtpHistoryClusters": [
         {
             "platforms": [
@@ -13117,6 +14423,25 @@
             ]
         }
     ],
+    "OmniboxMlScoringWithCachingDesktop": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "MlUrlScoreCaching"
+                    ]
+                }
+            ]
+        }
+    ],
     "OmniboxOnClobberFocusTypeOnContent": [
         {
             "platforms": [
@@ -13315,16 +14640,20 @@
             ]
         }
     ],
-    "OmniboxShortcutsAndroid": [
+    "OmniboxStarterPackIPH": [
         {
             "platforms": [
-                "android"
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "OmniboxShortcutsAndroid"
+                        "StarterPackIPH"
                     ]
                 }
             ]
@@ -13704,6 +15033,17 @@
                         "AdaptiveButtonInTopToolbarTranslate",
                         "SegmentationPlatformAdaptiveToolbarV2Feature"
                     ]
+                },
+                {
+                    "name": "Segmentation_Fixed_Random_6_Button_Forced_Refresh_60_Days_1_20240604",
+                    "enable_features": [
+                        "AdaptiveButtonInTopToolbarAddToBookmarks",
+                        "AdaptiveButtonInTopToolbarCustomizationV2",
+                        "AdaptiveButtonInTopToolbarTranslate",
+                        "ReadAloudInMultiWindow",
+                        "ReadAloudTapToSeek",
+                        "SegmentationPlatformAdaptiveToolbarV2Feature"
+                    ]
                 }
             ]
         }
@@ -13790,6 +15130,27 @@
             ]
         }
     ],
+    "PMProcessPriorityPolicy": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "PMProcessPriorityPolicy"
+                    ]
+                }
+            ]
+        }
+    ],
     "PageAllocatorRetryOnCommitFailure": [
         {
             "platforms": [
@@ -14171,18 +15532,24 @@
             ]
         }
     ],
-    "PartitionAllocParameterTuning": [
+    "PartitionAllocShortMemoryReclaim": [
         {
             "platforms": [
-                "mac"
+                "windows",
+                "mac",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "android",
+                "android_weblayer",
+                "android_webview"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240318",
+                    "name": "Enabled",
                     "enable_features": [
-                        "BlinkUseLargeEmptySlotSpanRingForBufferRoot",
-                        "PartitionAllocAdjustSizeWhenInForeground",
-                        "PartitionAllocLargeEmptySlotSpanRing"
+                        "PartitionAllocShortMemoryReclaim"
                     ]
                 }
             ]
@@ -14234,6 +15601,28 @@
             ]
         }
     ],
+    "PartitionAllocUseSmallSingleSlotSpans": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "PartitionAllocUseSmallSingleSlotSpans"
+                    ]
+                }
+            ]
+        }
+    ],
     "PartitionNetworkStateByNetworkAnonymizationKey": [
         {
             "platforms": [
@@ -14251,11 +15640,7 @@
                     "name": "enabled_triple_nik_cross_site_flag_nak_rollout",
                     "enable_features": [
                         "PartitionConnectionsByNetworkIsolationKey",
-                        "PartitionDomainReliabilityByNetworkIsolationKey",
-                        "PartitionHttpServerPropertiesByNetworkIsolationKey",
-                        "PartitionNelAndReportingByNetworkIsolationKey",
-                        "PartitionSSLSessionsByNetworkIsolationKey",
-                        "SplitHostCacheByNetworkIsolationKey"
+                        "PartitionDomainReliabilityByNetworkIsolationKey"
                     ],
                     "disable_features": []
                 }
@@ -14452,64 +15837,6 @@
             ]
         }
     ],
-    "PasswordSharingBackendAndroid": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "SharedPasswordNotificationUI"
-                    ]
-                }
-            ]
-        }
-    ],
-    "PasswordSharingBackendDesktopIOS": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "PasswordManagerEnableReceiverService",
-                        "PasswordManagerEnableSenderService",
-                        "SharedPasswordNotificationUI"
-                    ]
-                }
-            ]
-        }
-    ],
-    "PasswordSharingSendingUI": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "IPH_PasswordSharingFeature",
-                        "SendPasswords"
-                    ]
-                }
-            ]
-        }
-    ],
     "PasswordSuggestionBottomSheetV2": [
         {
             "platforms": [
@@ -14689,12 +16016,33 @@
                         "probability": "1.0"
                     },
                     "enable_features": [
-                        "PerformanceControlsBatterySaverOptOutSurvey"
-                    ],
-                    "disable_features": [
-                        "PerformanceControlsBatteryPerformanceSurvey",
-                        "PerformanceControlsHighEfficiencyOptOutSurvey",
-                        "PerformanceControlsPerformanceSurvey"
+                        "PerformanceControlsBatterySaverOptOutSurvey"
+                    ],
+                    "disable_features": [
+                        "PerformanceControlsBatteryPerformanceSurvey",
+                        "PerformanceControlsHighEfficiencyOptOutSurvey",
+                        "PerformanceControlsPerformanceSurvey"
+                    ]
+                }
+            ]
+        }
+    ],
+    "PerformanceControlsRound2Improvements": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_20240516",
+                    "enable_features": [
+                        "DiscardRingImprovements",
+                        "IPH_DiscardRing",
+                        "MemorySaverModeAggressiveness"
                     ]
                 }
             ]
@@ -14758,26 +16106,6 @@
             ]
         }
     ],
-    "PlusAddressRefreshDesktopModal": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "PlusAddressRefresh",
-                        "PlusAddressRefreshUiInDesktopModal"
-                    ]
-                }
-            ]
-        }
-    ],
     "PlusAddressesExperiment": [
         {
             "platforms": [
@@ -14793,6 +16121,9 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
+                        "PlusAddressRefresh",
+                        "PlusAddressRefreshUiInDesktopModal",
+                        "PlusAddressUIRedesign",
                         "PlusAddressesEnabled"
                     ]
                 }
@@ -14815,6 +16146,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
+                        "DedicatedWorkerAblationStudyEnabled",
                         "PlzDedicatedWorker",
                         "ServiceWorkerClientIdAlignedWithSpec"
                     ]
@@ -14866,8 +16198,9 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240502",
+                    "name": "Both_2024_05_29",
                     "enable_features": [
+                        "IsTrimMemoryBackgroundCritical",
                         "OnPreFreezeMemoryTrim"
                     ]
                 }
@@ -15038,23 +16371,17 @@
             ]
         }
     ],
-    "PreloadCookies": [
+    "PreinstalledWebAppsCoreOnly": [
         {
             "platforms": [
-                "android",
-                "android_weblayer",
                 "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos_lacros"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "PreloadCookies"
+                        "PreinstalledWebAppsCoreOnly"
                     ]
                 }
             ]
@@ -15073,7 +16400,8 @@
                 {
                     "name": "preload-on-make-contents",
                     "params": {
-                        "preload-mode": "preload-on-make-contents"
+                        "preload-mode": "preload-on-make-contents",
+                        "smart-preload": "true"
                     },
                     "enable_features": [
                         "PreloadTopChromeWebUI"
@@ -15082,7 +16410,8 @@
                 {
                     "name": "preload-on-warmup",
                     "params": {
-                        "preload-mode": "preload-on-warmup"
+                        "preload-mode": "preload-on-warmup",
+                        "smart-preload": "true"
                     },
                     "enable_features": [
                         "PreloadTopChromeWebUI"
@@ -15113,6 +16442,26 @@
             ]
         }
     ],
+    "Prerender2EarlyDocumentLifecycleUpdate": [
+        {
+            "platforms": [
+                "android",
+                "linux",
+                "mac",
+                "windows",
+                "chromeos",
+                "chromeos_lacros"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "Prerender2EarlyDocumentLifecycleUpdate"
+                    ]
+                }
+            ]
+        }
+    ],
     "Prerender2EmbedderBlockedHosts": [
         {
             "platforms": [
@@ -15135,7 +16484,7 @@
             ]
         }
     ],
-    "PressAndHoldEscToExitBrowserFullscreen": [
+    "Prerender2NewTabPageTrigger": [
         {
             "platforms": [
                 "linux",
@@ -15144,6 +16493,64 @@
                 "chromeos",
                 "chromeos_lacros"
             ],
+            "experiments": [
+                {
+                    "name": "BothMouseDownAndMouseHover_20240610",
+                    "params": {
+                        "prerender_new_tab_page_on_mouse_hover_trigger": "true",
+                        "prerender_new_tab_page_on_mouse_pressed_trigger": "true",
+                        "prerender_start_delay_on_mouse_hover_ms": "300"
+                    },
+                    "enable_features": [
+                        "NewTabPageTriggerForPrerender2"
+                    ]
+                },
+                {
+                    "name": "OnlyMouseHover300ms_20240610",
+                    "params": {
+                        "prerender_new_tab_page_on_mouse_hover_trigger": "true",
+                        "prerender_new_tab_page_on_mouse_pressed_trigger": "false",
+                        "prerender_start_delay_on_mouse_hover_ms": "300"
+                    },
+                    "enable_features": [
+                        "NewTabPageTriggerForPrerender2"
+                    ]
+                },
+                {
+                    "name": "OnlyMouseHover200ms_20240610",
+                    "params": {
+                        "prerender_new_tab_page_on_mouse_hover_trigger": "true",
+                        "prerender_new_tab_page_on_mouse_pressed_trigger": "false",
+                        "prerender_start_delay_on_mouse_hover_ms": "200"
+                    },
+                    "enable_features": [
+                        "NewTabPageTriggerForPrerender2"
+                    ]
+                },
+                {
+                    "name": "OnlyMouseDown_20240610",
+                    "params": {
+                        "prerender_new_tab_page_on_mouse_hover_trigger": "false",
+                        "prerender_new_tab_page_on_mouse_pressed_trigger": "true"
+                    },
+                    "enable_features": [
+                        "NewTabPageTriggerForPrerender2"
+                    ]
+                },
+                {
+                    "name": "Control_20240610",
+                    "disable_features": [
+                        "NewTabPageTriggerForPrerender2"
+                    ]
+                }
+            ]
+        }
+    ],
+    "PressAndHoldEscToExitBrowserFullscreen": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
             "experiments": [
                 {
                     "name": "Enabled",
@@ -15391,6 +16798,22 @@
             ]
         }
     ],
+    "PrivacyHubAppPermissionsV2": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "CrosPrivacyHubAppPermissionsV2"
+                    ]
+                }
+            ]
+        }
+    ],
     "PrivacyHubGeolocation": [
         {
             "platforms": [
@@ -15505,26 +16928,6 @@
             ]
         }
     ],
-    "PrivacySandboxAttestationsSentinel": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "DisablePrivacySandboxAttestationsSentinel",
-                    "disable_features": [
-                        "PrivacySandboxAttestationsSentinel"
-                    ]
-                }
-            ]
-        }
-    ],
     "PrivacySandboxHatsForDesktopM1": [
         {
             "platforms": [
@@ -15622,6 +17025,44 @@
             ]
         }
     ],
+    "PrivacySandboxLocalNoticeConfirmation": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Default_To_OS_Country_Enabled",
+                    "params": {
+                        "default-to-os-country": "true"
+                    },
+                    "enable_features": [
+                        "PrivacySandboxLocalNoticeConfirmation"
+                    ]
+                },
+                {
+                    "name": "Default_To_OS_Country_Disabled",
+                    "params": {
+                        "default-to-os-country": "false"
+                    },
+                    "enable_features": [
+                        "PrivacySandboxLocalNoticeConfirmation"
+                    ]
+                },
+                {
+                    "name": "Local_Notice_Confirmation_Disabled",
+                    "disable_features": [
+                        "PrivacySandboxLocalNoticeConfirmation"
+                    ]
+                }
+            ]
+        }
+    ],
     "PrivacySandboxProactiveTopicsBlocking": [
         {
             "platforms": [
@@ -15959,7 +17400,7 @@
             ]
         }
     ],
-    "ProtectedAudienceScoreAdRenderSize": [
+    "ProtectedAudienceMultiThreadedSellerWorklet": [
         {
             "platforms": [
                 "android",
@@ -15971,15 +17412,18 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "TwoThreads",
+                    "params": {
+                        "seller_worklet_thread_pool_size": "2"
+                    },
                     "enable_features": [
-                        "RenderSizeInScoreAdBrowserSignals"
+                        "FledgeSellerWorkletThreadPool"
                     ]
                 }
             ]
         }
     ],
-    "ProtectedAudienceStoreBandAKeysInDatabaseStudy": [
+    "ProtectedAudienceScoreAdRenderSize": [
         {
             "platforms": [
                 "android",
@@ -15993,19 +17437,18 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "FledgeStoreBandAKeysInDB"
+                        "RenderSizeInScoreAdBrowserSignals"
                     ]
                 }
             ]
         }
     ],
-    "ProtectedAudiences40ComponentAds": [
+    "ProtectedAudienceStoreBandAKeysInDatabaseStudy": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "chromeos_lacros",
-                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -16013,22 +17456,20 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "FledgeAdComponentLimit": "40"
-                    },
                     "enable_features": [
-                        "FledgeCustomMaxAuctionAdComponents"
+                        "FledgeStoreBandAKeysInDB"
                     ]
                 }
             ]
         }
     ],
-    "ProtectedAudiencesEnableDeprecatedRenderURLReplacements": [
+    "ProtectedAudiences40ComponentAds": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -16036,8 +17477,11 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "FledgeAdComponentLimit": "40"
+                    },
                     "enable_features": [
-                        "FledgeDeprecatedRenderURLReplacements"
+                        "FledgeCustomMaxAuctionAdComponents"
                     ]
                 }
             ]
@@ -16206,6 +17650,27 @@
             ]
         }
     ],
+    "PruneRedundantAXInlineTextBoxText": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AccessibilityPruneRedundantInlineText"
+                    ]
+                }
+            ]
+        }
+    ],
     "PsRedesign": [
         {
             "platforms": [
@@ -16228,6 +17693,23 @@
             ]
         }
     ],
+    "PumpFastToSleepAndroid": [
+        {
+            "platforms": [
+                "android_weblayer",
+                "android_webview",
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "PumpFastToSleepAndroid"
+                    ]
+                }
+            ]
+        }
+    ],
     "PushMessagingDisallowSenderIDs": [
         {
             "platforms": [
@@ -16293,6 +17775,21 @@
             ]
         }
     ],
+    "QuickDeleteAndroidFollowup": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "QuickDeleteAndroidFollowup"
+                    ]
+                }
+            ]
+        }
+    ],
     "QuotaDatabaseDisableFullFSync": [
         {
             "platforms": [
@@ -16419,10 +17916,12 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240220",
+                    "name": "Enabled_20240514",
+                    "params": {
+                        "voices_override": "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"
+                    },
                     "enable_features": [
                         "ReadAloud",
-                        "ReadAloudInMultiWindow",
                         "ReadAloudInOverflowMenuInCCT",
                         "ReadAloudPlayback"
                     ]
@@ -16431,25 +17930,6 @@
         }
     ],
     "ReadAnythingDocsIntegrationRollout": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Disabled",
-                    "disable_features": [
-                        "ReadAnythingDocsIntegration"
-                    ]
-                }
-            ]
-        }
-    ],
-    "ReadAnythingIPHRollout": [
         {
             "platforms": [
                 "chromeos",
@@ -16461,21 +17941,14 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "availability": "any",
-                        "distillable_urls": "support.google.com,docs.google.com",
-                        "event_trigger": "name:iph_reading_mode_side_panel_trigger;comparator:<=3;window:360;storage:360",
-                        "event_used": "name:reading_mode_side_panel_shown;comparator:==0;window:360;storage:360",
-                        "session_rate": "==0"
-                    },
                     "enable_features": [
-                        "IPH_ReadingModeSidePanel"
+                        "ReadAnythingDocsIntegration"
                     ]
                 }
             ]
         }
     ],
-    "ReadAnythingLocalSidePanelRollout": [
+    "ReadAnythingIPHRollout": [
         {
             "platforms": [
                 "chromeos",
@@ -16487,14 +17960,21 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "availability": "any",
+                        "distillable_urls": "support.google.com,docs.google.com",
+                        "event_trigger": "name:iph_reading_mode_side_panel_trigger;comparator:<=3;window:360;storage:360",
+                        "event_used": "name:reading_mode_side_panel_shown;comparator:==0;window:360;storage:360",
+                        "session_rate": "==0"
+                    },
                     "enable_features": [
-                        "ReadAnythingLocalSidePanel"
+                        "IPH_ReadingModeSidePanel"
                     ]
                 }
             ]
         }
     ],
-    "ReadAnythingOmniboxIconRollout": [
+    "ReadAnythingLocalSidePanelRollout": [
         {
             "platforms": [
                 "chromeos",
@@ -16506,11 +17986,8 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "distillable_urls": "support.google.com,docs.google.com"
-                    },
                     "enable_features": [
-                        "ReadAnythingOmniboxIcon"
+                        "ReadAnythingLocalSidePanel"
                     ]
                 }
             ]
@@ -16535,20 +18012,31 @@
             ]
         }
     ],
-    "ReadAnythingWebUIToolbarRollout": [
+    "ReadAnythingReadAloudRollout": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "ReadAnythingWebUIToolbar"
+                        "ReadAnythingReadAloud"
+                    ]
+                },
+                {
+                    "name": "LanguageDownloads_Enabled",
+                    "enable_features": [
+                        "ReadAloudLanguagePackDownloading",
+                        "ReadAnythingReadAloud"
+                    ]
+                },
+                {
+                    "name": "LanguageDownloadsAndVoiceSwitching_Enabled",
+                    "enable_features": [
+                        "ReadAloudAutoVoiceSwitching",
+                        "ReadAloudLanguagePackDownloading",
+                        "ReadAnythingReadAloud"
                     ]
                 }
             ]
@@ -16597,41 +18085,6 @@
             ]
         }
     ],
-    "RedWarningSurvey": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "RedInterstitialDontProceed_20230706",
-                    "params": {
-                        "RedWarningSurveyDidProceedFilter": "FALSE",
-                        "RedWarningSurveyTriggerId": "tk2kQP2nR0ugnJ3q1cK0RSntPR9W",
-                        "probability": "0.5"
-                    },
-                    "enable_features": [
-                        "RedWarningSurvey"
-                    ]
-                },
-                {
-                    "name": "RedInterstitialProceed_20230706",
-                    "params": {
-                        "RedWarningSurveyDidProceedFilter": "TRUE",
-                        "RedWarningSurveyTriggerId": "tFp5yLM9T0ugnJ3q1cK0QsMCryMd",
-                        "probability": "0.5"
-                    },
-                    "enable_features": [
-                        "RedWarningSurvey"
-                    ]
-                }
-            ]
-        }
-    ],
     "ReduceAcceptLanguage": [
         {
             "platforms": [
@@ -16730,21 +18183,6 @@
             ]
         }
     ],
-    "RegisterAppBoundEncryptionProvider": [
-        {
-            "platforms": [
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "RegisterAppBoundEncryptionProvider"
-                    ]
-                }
-            ]
-        }
-    ],
     "RelatedSearchesViaZPSPrefetchingDesktop": [
         {
             "platforms": [
@@ -16756,7 +18194,7 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_RelatedSearchesIntegration",
+                    "name": "Enabled",
                     "enable_features": [
                         "ExtractRelatedSearchesFromPrefetchedZPSResponse"
                     ]
@@ -16771,7 +18209,11 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240214",
+                    "name": "Enabled_20240514",
+                    "params": {
+                        "supported_countries": "*",
+                        "supported_locales": "*"
+                    },
                     "enable_features": [
                         "RemotePageMetadata"
                     ]
@@ -16786,7 +18228,11 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240402",
+                    "name": "Enabled_20240514",
+                    "params": {
+                        "supported_countries": "*",
+                        "supported_locales": "*"
+                    },
                     "enable_features": [
                         "PageContentAnnotationsPersistSalientImageMetadata",
                         "RemotePageMetadata"
@@ -16806,7 +18252,11 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240214",
+                    "name": "Enabled_20240514",
+                    "params": {
+                        "supported_countries": "*",
+                        "supported_locales": "*"
+                    },
                     "enable_features": [
                         "RemotePageMetadata"
                     ]
@@ -17081,14 +18531,34 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_20240530",
                     "enable_features": [
+                        "PageInfoAboutThisSite",
                         "RevampPageInfoIos"
                     ]
                 }
             ]
         }
     ],
+    "RichInlineAutocompleteAndroid": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_3Chars_AdditionalText",
+                    "params": {
+                        "rich_autocomplete_full_url": "true",
+                        "rich_autocomplete_minimum_characters": "3"
+                    },
+                    "enable_features": [
+                        "OmniboxRichAutocompletion"
+                    ]
+                }
+            ]
+        }
+    ],
     "RichInlineAutocompleteIOS": [
         {
             "platforms": [
@@ -17108,70 +18578,77 @@
             ]
         }
     ],
-    "RunPerformanceManagerOnMainThreadSync": [
+    "RubyLineBreakable": [
         {
             "platforms": [
                 "android",
                 "android_webview",
                 "chromeos",
                 "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "EnabledBoth",
+                    "name": "Enabled",
                     "enable_features": [
-                        "PMProcessPriorityPolicy",
-                        "RunPerformanceManagerOnMainThreadSync"
+                        "RubyLineBreakable"
                     ]
                 }
             ]
         }
     ],
-    "RunTasksByBatches": [
+    "RubyLineEdgeAlignment": [
         {
             "platforms": [
                 "android",
                 "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
                 "windows"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "RunTasksByBatches"
+                        "RubyLineEdgeAlignment"
                     ]
                 }
             ]
         }
     ],
-    "RustyJSONParser": [
+    "RubyShortHeuristics": [
         {
             "platforms": [
                 "android",
                 "android_webview",
                 "chromeos",
                 "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20230929",
+                    "name": "Enabled",
                     "enable_features": [
-                        "UseRustJsonParser"
+                        "RubyShortHeuristics"
                     ]
                 }
             ]
         }
     ],
-    "SafeBrowsingAsyncRealTimeCheck": [
+    "RunPerformanceManagerOnMainThreadSync": [
         {
             "platforms": [
                 "android",
+                "android_webview",
                 "chromeos",
                 "chromeos_lacros",
                 "linux",
@@ -17182,15 +18659,35 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "SafeBrowsingAsyncRealTimeCheck"
+                        "RunPerformanceManagerOnMainThreadSync"
                     ]
                 }
             ]
         }
     ],
-    "SafeBrowsingDeepScanningPromptRemoval": [
+    "RunTasksByBatches": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "RunTasksByBatches"
+                    ]
+                }
+            ]
+        }
+    ],
+    "RustyJSONParser": [
         {
             "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
                 "chromeos_lacros",
                 "linux",
                 "mac",
@@ -17198,15 +18695,15 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "Enabled_20230929",
                     "enable_features": [
-                        "SafeBrowsingDeepScanningPromptRemoval"
+                        "UseRustJsonParser"
                     ]
                 }
             ]
         }
     ],
-    "SafeBrowsingDelayedWarnings": [
+    "SafeBrowsingAsyncRealTimeCheck": [
         {
             "platforms": [
                 "android"
@@ -17215,16 +18712,15 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "SafeBrowsingDelayedWarnings"
+                        "SafeBrowsingAsyncRealTimeCheck"
                     ]
                 }
             ]
         }
     ],
-    "SafeBrowsingDownloadReportWithoutUserDecision": [
+    "SafeBrowsingDeepScanningPromptRemoval": [
         {
             "platforms": [
-                "chromeos",
                 "chromeos_lacros",
                 "linux",
                 "mac",
@@ -17234,26 +18730,22 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "DownloadReportWithoutUserDecision"
+                        "SafeBrowsingDeepScanningPromptRemoval"
                     ]
                 }
             ]
         }
     ],
-    "SafeBrowsingEncryptedArchivesMetadata": [
+    "SafeBrowsingGooglePlayProtectPrompt": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "android"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "SafeBrowsingGooglePlayProtectPrompt",
                     "enable_features": [
-                        "SafeBrowsingEncryptedArchivesMetadata"
+                        "SafeBrowsingGooglePlayProtectPrompt"
                     ]
                 }
             ]
@@ -17320,28 +18812,6 @@
                     ]
                 }
             ]
-        },
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "EnabledWithSubresourceFilter",
-                    "enable_features": [
-                        "SafeBrowsingNewGmsApiForBrowseUrlDatabaseCheck",
-                        "SafeBrowsingNewGmsApiForSubresourceFilterCheck"
-                    ]
-                },
-                {
-                    "name": "EnabledWithCallOnStartup",
-                    "enable_features": [
-                        "SafeBrowsingCallNewGmsApiOnStartup",
-                        "SafeBrowsingNewGmsApiForBrowseUrlDatabaseCheck",
-                        "SafeBrowsingNewGmsApiForSubresourceFilterCheck"
-                    ]
-                }
-            ]
         }
     ],
     "SafeBrowsingSevenZipEvaluationEnabled": [
@@ -17363,7 +18833,7 @@
             ]
         }
     ],
-    "SafetyCheckMagicStack": [
+    "SafetyCheckMagicStackWithCaching": [
         {
             "platforms": [
                 "ios"
@@ -17372,10 +18842,11 @@
                 {
                     "name": "Enabled",
                     "params": {
-                        "SafetyCheckMagicStackAutorunHoursThreshold": "24"
+                        "SafetyCheckMagicStackAutorunHoursThreshold": "720"
                     },
                     "enable_features": [
-                        "SafetyCheckMagicStack"
+                        "SafetyCheckMagicStack",
+                        "SegmentationPlatformIosModuleRankerSplitBySurface"
                     ]
                 }
             ]
@@ -17444,6 +18915,21 @@
             ]
         }
     ],
+    "SafetyHubAndroid": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "RecordPermissionExpirationTimestamps"
+                    ]
+                }
+            ]
+        }
+    ],
     "ScalableIphStudy": [
         {
             "platforms": [
@@ -18418,41 +19904,6 @@
             ]
         }
     ],
-    "ScreenCaptureKitStreamPickerSonoma": [
-        {
-            "platforms": [
-                "mac"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled_SCScreenshotManager",
-                    "params": {
-                        "capture_mode": "sc_screenshot_manager"
-                    },
-                    "enable_features": [
-                        "ScreenCaptureKitPickerScreen",
-                        "ScreenCaptureKitStreamPickerSonoma",
-                        "ThumbnailCapturerMac"
-                    ]
-                }
-            ]
-        }
-    ],
-    "ScreenCaptureKitStreamPickerVentura": [
-        {
-            "platforms": [
-                "mac"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "ScreenCaptureKitStreamPickerVentura"
-                    ]
-                }
-            ]
-        }
-    ],
     "ScreencastForceEnableServerSideSpeechRecognition": [
         {
             "platforms": [
@@ -18514,35 +19965,16 @@
             ]
         }
     ],
-    "SearchEnginePromoDialogRewrite": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "SearchEnginePromoDialogRewrite"
-                    ]
-                }
-            ]
-        }
-    ],
-    "SearchEnginesPromoV3": [
+    "SeaPenUseExptTemplate": [
         {
             "platforms": [
-                "android"
+                "chromeos"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "filter_locale": "false",
-                        "trigger_by_device_feature": "false"
-                    },
                     "enable_features": [
-                        "SearchEnginesPromoV3"
+                        "SeaPenUseExptTemplate"
                     ]
                 }
             ]
@@ -18817,6 +20249,48 @@
             ]
         }
     ],
+    "ServiceWorkerAvoidMainThreadForInitialization": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ServiceWorkerAvoidMainThreadForInitialization"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ServiceWorkerDebugCorsExemptHeaderList": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "ServiceWorkerDebugCorsExemptHeaderList"
+                    ]
+                }
+            ]
+        }
+    ],
     "ServiceWorkerStaticRouter": [
         {
             "platforms": [
@@ -19044,6 +20518,40 @@
             ]
         }
     ],
+    "ShortcutsNotApps": [
+        {
+            "platforms": [
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "ShortcutsNotApps",
+                    "enable_features": [
+                        "ShortcutsNotApps"
+                    ]
+                }
+            ]
+        }
+    ],
+    "ShortcutsNotAppsRevealDesktop": [
+        {
+            "platforms": [
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "ShortcutsNotAppsRevealDesktop",
+                    "enable_features": [
+                        "ShortcutsNotAppsRevealDesktop"
+                    ]
+                }
+            ]
+        }
+    ],
     "ShowWebauthnSuggestionsOnAutofocus": [
         {
             "platforms": [
@@ -19088,7 +20596,6 @@
                         "VisualQuerySuggestions"
                     ],
                     "disable_features": [
-                        "CompanionEnableNewBadgesInContextMenu",
                         "SideSearch"
                     ]
                 }
@@ -19185,8 +20692,9 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_20240214",
+                    "name": "Enabled_20240610",
                     "enable_features": [
+                        "OptimizeLoadingDataUrls",
                         "SimplifyLoadingTransparentPlaceholderImage"
                     ]
                 }
@@ -19257,6 +20765,22 @@
             ]
         }
     ],
+    "SkipParentApprovalToInstallExtensions": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "EnableSupervisedUserSkipParentApprovalToInstallExtensions"
+                    ]
+                }
+            ]
+        }
+    ],
     "SkipUnnecessaryThreadHopsForParseHeaders": [
         {
             "platforms": [
@@ -19278,6 +20802,22 @@
             ]
         }
     ],
+    "SkyVaultGA": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_SkyVaultV2",
+                    "enable_features": [
+                        "SkyVaultV2"
+                    ]
+                }
+            ]
+        }
+    ],
     "SkyVaultTTBeta": [
         {
             "platforms": [
@@ -19487,7 +21027,29 @@
                         "FledgeEnableWALForInterestGroupStorage",
                         "SharedStorageAPIEnableWALForDatabase",
                         "SqlWALModeOnDipsDatabase",
-                        "SqlWALModeOnSegmentationDatabase"
+                        "SqlWALModeOnSegmentationDatabase",
+                        "SqlWALModeOnWebDatabase"
+                    ]
+                }
+            ]
+        }
+    ],
+    "StaleStorageCleanup": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_Dogfood",
+                    "enable_features": [
+                        "DeleteStaleSessionCookiesOnStartup"
                     ]
                 }
             ]
@@ -19610,22 +21172,6 @@
             ]
         }
     ],
-    "SupervisedUserSkipParentApprovalToInstallExtensionsChromeOS": [
-        {
-            "platforms": [
-                "chromeos",
-                "chromeos_lacros"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "EnableSupervisedUserSkipParentApprovalToInstallExtensions"
-                    ]
-                }
-            ]
-        }
-    ],
     "SuppressToolbarCaptures": [
         {
             "platforms": [
@@ -19668,7 +21214,7 @@
             ]
         }
     ],
-    "SyncSchedulerUseWallClockTimer": [
+    "SyncPlusAddress": [
         {
             "platforms": [
                 "android",
@@ -19683,7 +21229,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "SyncSchedulerUseWallClockTimer"
+                        "SyncPlusAddress"
                     ]
                 }
             ]
@@ -19802,6 +21348,9 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "skip_tab_group_creation_dialog": "true"
+                    },
                     "enable_features": [
                         "TabGroupParityAndroid",
                         "TabStripGroupIndicatorsAndroid"
@@ -19820,7 +21369,8 @@
                     "name": "Enabled",
                     "enable_features": [
                         "TabGroupPaneAndroid",
-                        "TabGroupSyncAndroid"
+                        "TabGroupSyncAndroid",
+                        "TabStripGroupCollapseAndroid"
                     ]
                 }
             ]
@@ -19914,7 +21464,7 @@
             ]
         }
     ],
-    "TabSearchFuzzySearchStudy": [
+    "TabSearchInProductHelp": [
         {
             "platforms": [
                 "chromeos",
@@ -19926,53 +21476,33 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_FuzzyLevelMedium_20220405",
-                    "params": {
-                        "TabSearchSearchThreshold": "0.6"
-                    },
-                    "enable_features": [
-                        "TabSearchFuzzySearch"
-                    ]
-                },
-                {
-                    "name": "Enabled_FuzzyLevelSmall_20220405",
+                    "name": "TabSearchIPH",
                     "params": {
-                        "TabSearchSearchThreshold": "0.3"
+                        "availability": "any",
+                        "event_trigger": "name:tab_search_iph_tgr;comparator:==0;window:90;storage:360",
+                        "event_used": "name:tab_search_opened;comparator:==0;window:90;storage:360",
+                        "session_rate": "<3"
                     },
                     "enable_features": [
-                        "TabSearchFuzzySearch"
-                    ]
-                },
-                {
-                    "name": "Control",
-                    "disable_features": [
-                        "TabSearchFuzzySearch"
+                        "IPH_TabSearch"
                     ]
                 }
             ]
         }
     ],
-    "TabSearchInProductHelp": [
+    "TabStateFlatBuffer": [
         {
             "platforms": [
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
+                "android"
             ],
             "experiments": [
                 {
-                    "name": "TabSearchIPH",
+                    "name": "Enabled_20240713",
                     "params": {
-                        "availability": "any",
-                        "event_trigger": "name:tab_search_iph_tgr;comparator:==0;window:90;storage:360",
-                        "event_used": "name:tab_search_opened;comparator:==0;window:90;storage:360",
-                        "session_rate": "<3"
+                        "migrate_stale_tabs": "true"
                     },
                     "enable_features": [
-                        "IPH_TabSearch"
+                        "TabStateFlatBuffer"
                     ]
                 }
             ]
@@ -20043,9 +21573,15 @@
             ]
         }
     ],
-    "TextSafetyClassifier": [
+    "TextSizeAdjustImprovements": [
         {
             "platforms": [
+                "android",
+                "android_weblayer",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
@@ -20053,13 +21589,8 @@
             "experiments": [
                 {
                     "name": "Enabled",
-                    "params": {
-                        "on_device_must_use_safety_model": "false",
-                        "on_device_retract_unsafe_content": "false",
-                        "on_device_text_safety_token_interval": "10"
-                    },
                     "enable_features": [
-                        "TextSafetyClassifier"
+                        "TextSizeAdjustImprovements"
                     ]
                 }
             ]
@@ -20085,26 +21616,6 @@
             ]
         }
     ],
-    "ThirdPartyCookieDeprecationMetadataStageControl": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "TpcdMetadataStageControl"
-                    ]
-                }
-            ]
-        }
-    ],
     "ThirdPartyScriptDetection": [
         {
             "platforms": [
@@ -20238,16 +21749,17 @@
             ],
             "experiments": [
                 {
-                    "name": "AllMainFrame_20230517",
+                    "name": "PrecompileMainFrameNoWait_20240520",
                     "params": {
-                        "compile-in-parallel": "true",
+                        "compile-in-parallel": "false",
                         "compile-strategy": "lazy",
-                        "inline-script-timeout": "5ms",
-                        "precompile-main-frame-only": "true",
-                        "scan-main-frame-only": "true"
+                        "inline-script-timeout": "0ms",
+                        "precompile-main-frame-only": "true"
                     },
                     "enable_features": [
-                        "PrecompileInlineScripts",
+                        "PrecompileInlineScripts"
+                    ],
+                    "disable_features": [
                         "ThreadedBodyLoader",
                         "ThreadedPreloadScanner"
                     ]
@@ -20277,21 +21789,6 @@
             ]
         }
     ],
-    "TimeOfDayDlc": [
-        {
-            "platforms": [
-                "chromeos"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "TimeOfDayDlc"
-                    ]
-                }
-            ]
-        }
-    ],
     "TimedHTMLParserBudget": [
         {
             "platforms": [
@@ -20375,7 +21872,7 @@
             ]
         }
     ],
-    "TopLevelThirdPartyCookieDeprecationTrialService": [
+    "TopLevelOriginTrialForThirdPartyCookieDeprecation": [
         {
             "platforms": [
                 "android",
@@ -20390,49 +21887,50 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "TopLevelTpcdSupportSettings"
+                        "TopLevelTpcdOriginTrial"
                     ]
                 }
             ]
         }
     ],
-    "TouchpadFastClickStudy": [
+    "TopLevelThirdPartyCookieDeprecationTrialService": [
         {
             "platforms": [
+                "android",
                 "chromeos",
-                "chromeos_lacros"
+                "chromeos_lacros",
+                "fuchsia",
+                "linux",
+                "mac",
+                "windows"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "EnableFastTouchpadClick"
+                        "TopLevelTpcdSupportSettings"
                     ]
                 }
             ]
         }
     ],
-    "TrackingProtection3pcd": [
+    "TouchpadFastClickStudy": [
         {
             "platforms": [
-                "android",
                 "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos_lacros"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "TrackingProtection3pcd"
+                        "EnableFastTouchpadClick"
                     ]
                 }
             ]
         }
     ],
-    "TrackingProtectionRollback": [
+    "TrackingProtection3pcd": [
         {
             "platforms": [
                 "android",
@@ -20446,8 +21944,7 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "TrackingProtectionOnboardingRollback",
-                        "TrackingProtectionSettingsPageRollbackNotice"
+                        "TrackingProtection3pcd"
                     ]
                 }
             ]
@@ -20597,6 +22094,10 @@
                         "safe-browsing-interstitial-trigger-id": "Z9pSWP53n0ugnJ3q1cK0Y6YkGRpU",
                         "safety-check-probability": "0.0",
                         "safety-check-trigger-id": "YSDfPVMnX0ugnJ3q1cK0RxEhwkay",
+                        "safety-hub-interaction-probability": "0.0",
+                        "safety-hub-interaction-trigger-id": "TZq2S4frt0ugnJ3q1cK0Q5Yd4YJM",
+                        "safety-hub-notification-probability": "0.0",
+                        "safety-hub-notification-trigger-id": "kJV17f8Lv0ugnJ3q1cK0Nptk37ct",
                         "trusted-surface-probability": "0.0",
                         "trusted-surface-time": "5s",
                         "trusted-surface-trigger-id": "CMniDmzgE0ugnJ3q1cK0U6PaEn1f"
@@ -20749,9 +22250,11 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "min_gms_version_for_auto": "241512000"
+                    },
                     "enable_features": [
                         "ClearLoginDatabaseForUPMUsers",
-                        "UnifiedPasswordManagerLocalPasswordsAndroidWithMigration",
                         "UnifiedPasswordManagerSyncOnlyInGMSCore"
                     ]
                 }
@@ -20788,6 +22291,29 @@
             ]
         }
     ],
+    "UnblockTouchMoveEarlier": [
+        {
+            "platforms": [
+                "android",
+                "android_webview",
+                "chromeos",
+                "chromeos_lacros",
+                "fuchsia",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "UnblockTouchMoveEarlier"
+                    ]
+                }
+            ]
+        }
+    ],
     "UnifiedAutoplay": [
         {
             "platforms": [
@@ -20856,6 +22382,21 @@
             ]
         }
     ],
+    "UseAppBoundEncryptionProviderForEncryption": [
+        {
+            "platforms": [
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "UseAppBoundEncryptionProviderForEncryption"
+                    ]
+                }
+            ]
+        }
+    ],
     "UseBoringSSLForRandBytes": [
         {
             "platforms": [
@@ -21021,6 +22562,40 @@
             ]
         }
     ],
+    "UseItemSnippetsAPI": [
+        {
+            "platforms": [
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "UseItemSnippetsAPI"
+                    ]
+                }
+            ]
+        },
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros"
+            ],
+            "experiments": [
+                {
+                    "//0": "TODO(crbug.com/325314721): Enable the experiment",
+                    "//1": "for chromeos once test migration for the new API",
+                    "//2": "has been completed.",
+                    "name": "Disabled",
+                    "disable_features": [
+                        "UseItemSnippetsAPI"
+                    ]
+                }
+            ]
+        }
+    ],
     "UseMoveNotCopyInAXTreeCombiner": [
         {
             "platforms": [
@@ -21104,43 +22679,6 @@
             ]
         }
     ],
-    "UseRecordedBoundsForTiling": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "UseRecordedBoundsForTiling"
-                    ]
-                }
-            ]
-        }
-    ],
-    "UseSimplifiedMessagePumpKqueueLoop": [
-        {
-            "platforms": [
-                "mac",
-                "ios"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "UseSimplifiedMessagePumpKqueueLoop"
-                    ]
-                }
-            ]
-        }
-    ],
     "UseSmartRefForGPUFenceHandle": [
         {
             "platforms": [
@@ -21852,7 +23390,7 @@
             ]
         }
     ],
-    "V8ProfileGuidedOptimization": [
+    "V8SideStepTransitions": [
         {
             "platforms": [
                 "chromeos",
@@ -21869,13 +23407,19 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "V8ProfileGuidedOptimization"
+                        "V8SideStepTransitions"
+                    ]
+                },
+                {
+                    "name": "Disabled",
+                    "disable_features": [
+                        "V8SideStepTransitions"
                     ]
                 }
             ]
         }
     ],
-    "V8SingleThreadedGCInBackground": [
+    "V8SingleThreadedGCInBackgroundVariants": [
         {
             "platforms": [
                 "android",
@@ -21892,6 +23436,30 @@
                     "name": "Enabled",
                     "enable_features": [
                         "V8SingleThreadedGCInBackground"
+                    ],
+                    "disable_features": [
+                        "V8SingleThreadedGCInBackgroundNoIncrementalMarking",
+                        "V8SingleThreadedGCInBackgroundParallelPause"
+                    ]
+                },
+                {
+                    "name": "ParallelPause",
+                    "enable_features": [
+                        "V8SingleThreadedGCInBackground",
+                        "V8SingleThreadedGCInBackgroundParallelPause"
+                    ],
+                    "disable_features": [
+                        "V8SingleThreadedGCInBackgroundNoIncrementalMarking"
+                    ]
+                },
+                {
+                    "name": "NoIncrementalMarking",
+                    "enable_features": [
+                        "V8SingleThreadedGCInBackground",
+                        "V8SingleThreadedGCInBackgroundNoIncrementalMarking"
+                    ],
+                    "disable_features": [
+                        "V8SingleThreadedGCInBackgroundParallelPause"
                     ]
                 }
             ]
@@ -22044,7 +23612,7 @@
             ]
         }
     ],
-    "V8WasmInlining": [
+    "V8WasmMoreAggressiveCodeCaching": [
         {
             "platforms": [
                 "android",
@@ -22052,90 +23620,61 @@
                 "android_webview",
                 "chromeos",
                 "chromeos_lacros",
+                "fuchsia",
                 "linux",
                 "mac",
                 "windows"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "1_ReducedThreshold",
+                    "params": {
+                        "WebAssemblyCodeCachingThreshold": "200"
+                    },
                     "enable_features": [
-                        "WebAssemblyInlining"
+                        "WebAssemblyMoreAggressiveCodeCaching"
                     ]
                 },
                 {
-                    "name": "Control",
-                    "disable_features": [
-                        "WebAssemblyInlining"
-                    ]
-                }
-            ]
-        }
-    ],
-    "V8WasmMoreAggressiveCodeCaching": [
-        {
-            "platforms": [
-                "android",
-                "android_weblayer",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "3_CacheAfter5Sec",
+                    "name": "2_IncreasedThreshold",
                     "params": {
-                        "WebAssemblyCodeCachingHardThreshold": "100000",
-                        "WebAssemblyCodeCachingThreshold": "1000",
-                        "WebAssemblyCodeCachingTimeoutMs": "5000"
+                        "WebAssemblyCodeCachingThreshold": "10000"
                     },
                     "enable_features": [
                         "WebAssemblyMoreAggressiveCodeCaching"
                     ]
                 },
                 {
-                    "name": "1_ReducedThreshold",
+                    "name": "3_ReducedHardThreshold",
                     "params": {
-                        "WebAssemblyCodeCachingHardThreshold": "100000",
-                        "WebAssemblyCodeCachingThreshold": "100000",
-                        "WebAssemblyCodeCachingTimeoutMs": "0"
+                        "WebAssemblyCodeCachingHardThreshold": "200000"
                     },
                     "enable_features": [
                         "WebAssemblyMoreAggressiveCodeCaching"
                     ]
                 },
                 {
-                    "name": "2_CacheAfter30Sec",
+                    "name": "4_IncreasedHardThreshold",
                     "params": {
-                        "WebAssemblyCodeCachingHardThreshold": "1000000",
-                        "WebAssemblyCodeCachingThreshold": "1000",
-                        "WebAssemblyCodeCachingTimeoutMs": "30000"
+                        "WebAssemblyCodeCachingHardThreshold": "10000000"
                     },
                     "enable_features": [
                         "WebAssemblyMoreAggressiveCodeCaching"
                     ]
                 },
                 {
-                    "name": "4_CacheAfter2Sec",
+                    "name": "5_ReducedTimeout",
                     "params": {
-                        "WebAssemblyCodeCachingHardThreshold": "1000000",
-                        "WebAssemblyCodeCachingThreshold": "1",
-                        "WebAssemblyCodeCachingTimeoutMs": "2000"
+                        "WebAssemblyCodeCachingTimeoutMs": "500"
                     },
                     "enable_features": [
                         "WebAssemblyMoreAggressiveCodeCaching"
                     ]
                 },
                 {
-                    "name": "5_CacheAfter1Sec",
+                    "name": "6_IncreasedTimeout",
                     "params": {
-                        "WebAssemblyCodeCachingHardThreshold": "10000",
-                        "WebAssemblyCodeCachingThreshold": "1",
-                        "WebAssemblyCodeCachingTimeoutMs": "1000"
+                        "WebAssemblyCodeCachingTimeoutMs": "10000"
                     },
                     "enable_features": [
                         "WebAssemblyMoreAggressiveCodeCaching"
@@ -22371,36 +23910,6 @@
             ]
         }
     ],
-    "VideoToolboxAv1Decoding": [
-        {
-            "platforms": [
-                "mac"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "VideoToolboxAv1Decoding"
-                    ]
-                }
-            ]
-        }
-    ],
-    "VideoToolboxVideoDecoder": [
-        {
-            "platforms": [
-                "mac"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "VideoToolboxVideoDecoder"
-                    ]
-                }
-            ]
-        }
-    ],
     "ViewTransitionOnNavigation": [
         {
             "platforms": [
@@ -22471,6 +23980,7 @@
                     ],
                     "hardware_classes": [
                         "brya",
+                        "dedede",
                         "guybrush",
                         "nissa",
                         "rex",
@@ -22546,30 +24056,11 @@
             ]
         }
     ],
-    "WaffleAndroidStudy": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "SearchEngineChoiceTrigger"
-                    ]
-                }
-            ]
-        }
-    ],
     "WaffleStudy": [
         {
             "platforms": [
                 "chromeos",
-                "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
+                "chromeos_lacros"
             ],
             "experiments": [
                 {
@@ -22603,21 +24094,6 @@
             ]
         }
     ],
-    "WaitUntilAccessTokenAvailableForClassifyUrl": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "WaitUntilAccessTokenAvailableForClassifyUrl"
-                    ]
-                }
-            ]
-        }
-    ],
     "WebApkAllowIconUpdate": [
         {
             "platforms": [
@@ -22636,7 +24112,7 @@
             ]
         }
     ],
-    "WebApkBackupAndRestoreBackend": [
+    "WebApkBackupAndRestore": [
         {
             "platforms": [
                 "android"
@@ -22645,8 +24121,18 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
+                        "PwaRestoreUi",
                         "WebApkBackupAndRestoreBackend"
                     ]
+                },
+                {
+                    "name": "BackendOnly",
+                    "enable_features": [
+                        "WebApkBackupAndRestoreBackend"
+                    ],
+                    "disable_features": [
+                        "PwaRestoreUi"
+                    ]
                 }
             ]
         }
@@ -22684,22 +24170,6 @@
             ]
         }
     ],
-    "WebApkUniversalInstallUI": [
-        {
-            "platforms": [
-                "android"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "PwaUniversalInstallUi",
-                        "UniversalInstallRootScopeNoManifest"
-                    ]
-                }
-            ]
-        }
-    ],
     "WebAssemblyGenericWrapper": [
         {
             "platforms": [
@@ -22744,6 +24214,22 @@
             ]
         }
     ],
+    "WebAuthenticationEnclaveAuthenticator": [
+        {
+            "platforms": [
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "WebAuthenticationEnclaveAuthenticator"
+                    ]
+                }
+            ]
+        }
+    ],
     "WebContentsCaptureHiDPI": [
         {
             "platforms": [
@@ -23269,6 +24755,26 @@
             ]
         }
     ],
+    "WebRTC-Video-H26xPacketBuffer": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "WebRTC-Video-H26xPacketBuffer"
+                    ]
+                }
+            ]
+        }
+    ],
     "WebRTC-Vp9ExternalRefCtrl": [
         {
             "platforms": [
@@ -23390,28 +24896,6 @@
             ]
         }
     ],
-    "WebRtcInitializeEncoderOnFirstFrame": [
-        {
-            "platforms": [
-                "android",
-                "android_webview",
-                "chromeos",
-                "chromeos_lacros",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "WebRtcInitializeEncoderOnFirstFrame"
-                    ]
-                }
-            ]
-        }
-    ],
     "WebRtcThreadsUseResourceEfficientType": [
         {
             "platforms": [
@@ -23574,7 +25058,7 @@
             ]
         }
     ],
-    "WebViewMediaIntegrityApi": [
+    "WebViewOptimizeXrwNavigationFlow": [
         {
             "platforms": [
                 "android_webview"
@@ -23583,13 +25067,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "WebViewMediaIntegrityApi"
+                        "WebViewOptimizeXrwNavigationFlow"
                     ]
                 }
             ]
         }
     ],
-    "WebViewMediaIntegrityApiBlinkExtension": [
+    "WebViewPreloadClasses": [
         {
             "platforms": [
                 "android_webview"
@@ -23598,13 +25082,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "WebViewMediaIntegrityApiBlinkExtension"
+                        "WebViewPreloadClasses"
                     ]
                 }
             ]
         }
     ],
-    "WebViewOptimizeXrwNavigationFlow": [
+    "WebViewRecordAppDataDirectorySize": [
         {
             "platforms": [
                 "android_webview"
@@ -23613,13 +25097,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "WebViewOptimizeXrwNavigationFlow"
+                        "WebViewRecordAppDataDirectorySize"
                     ]
                 }
             ]
         }
     ],
-    "WebViewPreloadClasses": [
+    "WebViewSupervisedUser": [
         {
             "platforms": [
                 "android_webview"
@@ -23628,13 +25112,13 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "WebViewPreloadClasses"
+                        "WebViewSupervisedUserSiteDetection"
                     ]
                 }
             ]
         }
     ],
-    "WebViewRecordAppDataDirectorySize": [
+    "WebViewSurfaceControl": [
         {
             "platforms": [
                 "android_webview"
@@ -23643,13 +25127,14 @@
                 {
                     "name": "Enabled",
                     "enable_features": [
-                        "WebViewRecordAppDataDirectorySize"
+                        "WebViewNewInvalidateHeuristic",
+                        "WebViewSurfaceControl"
                     ]
                 }
             ]
         }
     ],
-    "WebViewSupervisedUser": [
+    "WebViewSurfaceControlForTV": [
         {
             "platforms": [
                 "android_webview"
@@ -23657,24 +25142,47 @@
             "experiments": [
                 {
                     "name": "Enabled",
+                    "params": {
+                        "RelaxLimitAImageReaderMaxSizeToOneBlocklist": "*Broadcom*|*Google*",
+                        "RelaxLimitAImageReaderMaxSizeToOneManufacturerBlocklist": "*Google*",
+                        "RelaxLimitAImageReaderMaxSizeToOneSoCBlocklist": "*Broadcom*"
+                    },
                     "enable_features": [
-                        "WebViewSupervisedUserSiteDetection"
+                        "RelaxLimitAImageReaderMaxSizeToOne",
+                        "WebViewSurfaceControlForTV"
                     ]
                 }
             ]
         }
     ],
-    "WebViewSurfaceControl": [
+    "WebViewThreadReduction": [
         {
             "platforms": [
                 "android_webview"
             ],
             "experiments": [
                 {
-                    "name": "Enabled",
+                    "name": "ReduceAllThreads",
+                    "params": {
+                        "BrowserThreadPoolCoresMultiplierFor16GBAndAbove": "0.4",
+                        "BrowserThreadPoolCoresMultiplierFor1GBTo2GB": "0.4",
+                        "BrowserThreadPoolCoresMultiplierFor2GBTo4GB": "0.4",
+                        "BrowserThreadPoolCoresMultiplierFor4GBTo8GB": "0.4",
+                        "BrowserThreadPoolCoresMultiplierFor512MBTo1GB": "0.4",
+                        "BrowserThreadPoolCoresMultiplierFor8GBTo16GB": "0.4",
+                        "BrowserThreadPoolCoresMultiplierForLessThan512MB": "0.4",
+                        "BrowserThreadPoolMinFor16GBAndAbove": "2",
+                        "BrowserThreadPoolMinFor1GBTo2GB": "2",
+                        "BrowserThreadPoolMinFor2GBTo4GB": "2",
+                        "BrowserThreadPoolMinFor4GBTo8GB": "2",
+                        "BrowserThreadPoolMinFor512MBTo1GB": "2",
+                        "BrowserThreadPoolMinFor8GBTo16GB": "2",
+                        "BrowserThreadPoolMinForLessThan512MB": "2"
+                    },
                     "enable_features": [
-                        "WebViewNewInvalidateHeuristic",
-                        "WebViewSurfaceControl"
+                        "BrowserThreadPoolAdjustment",
+                        "InProcessGpuUseIOThread",
+                        "NetworkServiceDedicatedThread"
                     ]
                 }
             ]
@@ -23756,21 +25264,6 @@
             ]
         }
     ],
-    "WebViewXRequestedWithHeaderManifestAllowList": [
-        {
-            "platforms": [
-                "android_webview"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "WebViewXRequestedWithHeaderManifestAllowList"
-                    ]
-                }
-            ]
-        }
-    ],
     "WebViewZoomKeyboardShortcuts": [
         {
             "platforms": [
diff --git a/tools/under-control/src/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom b/tools/under-control/src/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
index 6a3f2a28f..30310f2d7 100755
--- a/tools/under-control/src/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
+++ b/tools/under-control/src/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
@@ -3411,7 +3411,7 @@ enum WebFeature {
 
   kAllowPaymentRequestAttributeHasEffect = 4094,
   kV8PaymentResponse_Retry_Method = 4095,
-  kWebAppManifestUserPreferences = 4096,
+  kOBSOLETE_kWebAppManifestUserPreferences = 4096,
   kV8HTMLInputElement_ShowPicker_Method = 4097,
   kLayerXYWithMediaTarget = 4098,
   kLayerXYWithCanvasTarget = 4099,
@@ -3778,12 +3778,12 @@ enum WebFeature {
   kCSSBackgroundClipBorder = 4436,
   kCSSBackgroundClipContent = 4437,
   kCSSBackgroundClipPadding = 4438,
-  kDisableThirdPartySessionStoragePartitioningAfterGeneralPartitioning = 4439,
+  kOBSOLETE_DisableThirdPartySessionStoragePartitioningAfterGeneralPartitioning = 4439,
   kOBSOLETE_kCSSPseudoHasContainsMixOfValidAndInvalid = 4440,
   kOBSOLETE_kCSSPseudoIsWhereContainsMixOfValidAndInvalid = 4441,
   kPrivateNetworkAccessFetchedSubFrame = 4442,
   kPrivateNetworkAccessFetchedTopFrame = 4443,
-  kDisableThirdPartyStoragePartitioning = 4444,
+  kOBSOLETE_DisableThirdPartyStoragePartitioning = 4444,
   kServiceWorkerFetchHandlerAddedAfterInitialization = 4445,
   kObsoleteCreateImageBitmapImageOrientationNone = 4446,
   kOBSOLETE_kWindowManagementPermissionDescriptorUsed = 4447,
@@ -4260,8 +4260,6 @@ enum WebFeature {
   kQuirksModeCursorHand = 4896,
   kTrustedTypesCreatePolicyWithEmptyName = 4897,
   kV8RTCEncodedAudioFrame_Constructor = 4898,
-
-  // Direct Sockets API:
   kTCPSocketConstructor = 4899,
   kTCPSocketOpenedAttribute = 4900,
   kTCPSocketClosedAttribute = 4901,
@@ -4274,8 +4272,6 @@ enum WebFeature {
   kTCPServerSocketOpenedAttribute = 4908,
   kTCPServerSocketClosedAttribute = 4909,
   kTCPServerSocketCloseFunction = 4910,
-
-  // Web Printing API:
   kWebPrintingGetPrintersFunction = 4911,
   kWebPrinterCachedAttributesFunction = 4912,
   kWebPrinterFetchAttributesFunction = 4913,
@@ -4285,72 +4281,51 @@ enum WebFeature {
   kWebPrintJobOnJobStateChangeEvent = 4917,
   kFledgeAuctionReportBuyers = 4918,
   kFledgeAuctionReportBuyerDebugModeConfig = 4919,
-
   kFedCmButtonMode = 4920,
-  kHTMLPermissionElement = 4921,
-
-  // Model Execution API:
-  kV8ModelGenericSession_Execute_Method = 4922,
-  kV8ModelGenericSession_ExecuteStreaming_Method = 4923,
-  kV8ModelManager_CanCreateGenericSession_Method = 4924,
-  kV8ModelManager_CreateGenericSession_Method = 4925,
+  // The items above roughly this point are available in the M124 branch.
 
+  kHTMLPermissionElement = 4921,
+  kOBSOLETE_V8ModelGenericSession_Execute_Method = 4922,
+  kOBSOLETE_V8ModelGenericSession_ExecuteStreaming_Method = 4923,
+  kOBSOLETE_V8ModelManager_CanCreateGenericSession_Method = 4924,
+  kOBSOLETE_V8ModelManager_CreateGenericSession_Method = 4925,
   kV8Animation_Progress_AttributeGetter = 4926,
-
-  kV8ModelManager_DefaultGenericSessionOptions_Method = 4927,
-
+  kOBSOLETE_V8ModelManager_DefaultGenericSessionOptions_Method = 4927,
   kQuirksModeCursorHandApplied = 4928,
   kSkippedPreloadScanning = 4929,
   kCSSColor_SpaceRGB = 4930,
   kCSSColor_SpaceRGB_outOfRec2020= 4931,
   kCSSColor_SpaceOkLxx = 4932,
   kCSSColor_SpaceOkLxx_outOfRec2020 = 4933,
-
-  // Uses of base URL in sandboxed srcdoc frames:
   kSandboxedSrcdocFrameResolvesRelativeURL = 4934,
-
   kV8Ink_RequestPresenter_Method = 4935,
   kEventTimingOrphanPointerup = 4936,
   kNavigatorCookieEnabledThirdParty = 4937,
-
   kFoldableAPIs = 4938,
-
-  // https://drafts.csswg.org/css-scroll-snap-2/#snap-events
   kSnapEvent = 4939,
-
   kStaticPropertyInAnimation = 4940,
-
   kSimplifyLoadingTransparentPlaceholderImage = 4941,
-
   kIdentityDigitalCredentialsSuccess = 4942,
   kV8DeviceProperties_UniqueId_AttributeGetter = 4943,
+  // The items above roughly this point are available in the M125 branch.
 
   kSharedStorageAPI_SelectURLOverallPageloadBudgetInsufficient = 4944,
-
   kV8LanguageTranslator_Translate_Method = 4945,
   kV8Translation_CanTranslate_Method = 4946,
   kV8Translation_CreateTranslator_Method = 4947,
-
   kIdentityDigitalCredentialsDeepLink = 4948,
-
   kV8WebView_GetExperimentalMediaIntegrityTokenProvider_Method = 4949,
   kV8MediaIntegrityTokenProvider_RequestToken_Method = 4950,
   kCanvas2DLayersFilters = 4951,
   kCanvas2DLayersCSSFilters = 4952,
   kCanvas2DLayersFilterObjects = 4953,
-
-  // https://drafts.csswg.org/css-scroll-snap-2/#scroll-start-target
   kCSSScrollStartTarget = 4954,
-
   kFedCmContinueOnResponse = 4955,
   kFedCmMultipleIdentityProviders = 4956,
-
   kFedCmWithStorageAccessAPI = 4957,
   kCSSSelectorUserValid = 4958,
   kCSSSelectorUserInvalid = 4959,
-
   kCrossShadowAtomicMove = 4960,
-
   kPrefersReducedMotionMediaFeature = 4961,
   kPrefersReducedTransparencyMediaFeature = 4962,
   kPrefersReducedDataMediaFeature = 4963,
@@ -4363,10 +4338,41 @@ enum WebFeature {
   kCaretPositionFromPoint = 4970,
   kDocumentPolicyIncludeJSCallStacksInCrashReports = 4971,
   kMaximumHTMLParserDOMTreeDepthHit = 4972,
+  // The items above roughly this point are available in the M126 branch.
 
+  kV8ModelGenericSession_Destroy_Method = 4973,
+  kUsedDeviceScaleAdjustment = 4974,
+  kDisableThirdPartyStoragePartitioning2 = 4975,
+  kLinkRelPayment = 4976,
+  kV8GPUAdapter_RequestAdapterInfo_Method = 4977,
+  kOBSOLETE_V8ModelGenericSession_Destroy_Method = 4978,
+  kV8AITextSession_Execute_Method = 4979,
+  kV8AITextSession_ExecuteStreaming_Method = 4980,
+  kV8AI_CanCreateGenericSession_Method = 4981,
+  kV8AI_CreateGenericSession_Method = 4982,
+  kV8AI_DefaultGenericSessionOptions_Method = 4983,
+  kV8AITextSession_Prompt_Method = 4984,
+  kV8AITextSession_PromptStreaming_Method = 4985,
+  kV8AI_CanCreateTextSession_Method = 4986,
+  kV8AI_CreateTextSession_Method = 4987,
+  kV8AI_DefaultTextSessionOptions_Method = 4988,
+  kV8AITextSession_Destroy_Method = 4989,
+  kImportMapIntegrity = 4990,
+  kSelectElementAppearanceNone = 4991,
+  kRubyPositionAlternate = 4992,
+  kRubyPositionInterCharacter = 4993,
+  kTextSizeAdjustNotAuto = 4994,
+  kTextSizeAdjustPercentNot100 = 4995,
+  kServiceWorkerAutoPreload = 4996,
+  kV8InvalidatedNoUndetectableObjectsProtector = 4997,
+  kV8DocumentAllLegacyCall = 4998,
+  kV8DocumentAllLegacyConstruct = 4999,
 
   // Add new features immediately above this line. Don't change assigned
-  // numbers of any item, and don't reuse removed slots.
+  // numbers of any item, and don't reuse removed slots. Also don't add extra
+  // spaces or comments in this file. Comments belong next to the usage of
+  // these constants in code.
+
   // Also, run update_use_counter_feature_enum.py in
   // chromium/src/tools/metrics/histograms/ to update the UMA mapping.
   // TODO(dcheng): Fix https://crbug.com/742517 and use the autogenerated
diff --git a/tools/under-control/src/third_party/blink/renderer/core/css/parser/media_query_parser.cc b/tools/under-control/src/third_party/blink/renderer/core/css/parser/media_query_parser.cc
index c49fcc35b..2abe942d1 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/css/parser/media_query_parser.cc
+++ b/tools/under-control/src/third_party/blink/renderer/core/css/parser/media_query_parser.cc
@@ -270,7 +270,7 @@ MediaQueryOperator MediaQueryParser::ConsumeComparison(
       return MediaQueryOperator::kGt;
   }
 
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return MediaQueryOperator::kNone;
 }
 
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/attribute_part.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/attribute_part.idl
index 516166472..92d8803b3 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/attribute_part.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/attribute_part.idl
@@ -7,8 +7,7 @@
 
 [RuntimeEnabled=DOMPartsAPI,Exposed=Window]
 interface AttributePart : NodePart {
-  [RaisesException] constructor(PartRoot root, Element element, DOMString localName, boolean automatic, optional PartInit init = {});
+  [RaisesException] constructor(PartRoot root, Element element, DOMString localName, optional PartInit init = {});
   // For now, HTML only, don't deal with prefix or namespaceURI.
   readonly attribute DOMString localName;
-  readonly attribute boolean automatic;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/caret_position_from_point_options.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/caret_position_from_point_options.idl
new file mode 100755
index 000000000..123b48740
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/caret_position_from_point_options.idl
@@ -0,0 +1,7 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+dictionary CaretPositionFromPointOptions {
+  sequence<ShadowRoot> shadowRoots = [];
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/document.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/document.idl
index 357398037..0245b5628 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/document.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/document.idl
@@ -184,7 +184,7 @@ typedef (HTMLScriptElement or SVGScriptElement) HTMLOrSVGScriptElement;
     [MeasureAs=DocumentCaretRangeFromPoint] Range caretRangeFromPoint(optional long x = 0, optional long y = 0);
 
     // https://www.w3.org/TR/cssom-view/#dom-document-caretpositionfrompoint
-    [NewObject, MeasureAs=CaretPositionFromPoint, RuntimeEnabled=CaretPositionFromPoint] CaretPosition? caretPositionFromPoint(float x, float y, ShadowRoot... shadowRoots);
+    [NewObject, MeasureAs=CaretPositionFromPoint, RuntimeEnabled=CaretPositionFromPoint] CaretPosition? caretPositionFromPoint(float x, float y, optional CaretPositionFromPointOptions options = {});
 
     // Text fragment directive API
     // https://wicg.github.io/scroll-to-text-fragment/#feature-detectability
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/element.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/element.idl
index 53ad9ffc5..bda854f8f 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/element.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/element.idl
@@ -44,7 +44,7 @@ dictionary CheckVisibilityOptions {
 
     [Affects=Nothing] boolean hasAttributes();
     [SameObject, PerWorldBindings, ImplementedAs=attributesForBindings] readonly attribute NamedNodeMap attributes;
-    [Affects=Nothing] sequence<DOMString> getAttributeNames();
+    [Affects=Nothing, ImplementedAs=getAttributeNamesForBindings] sequence<DOMString> getAttributeNames();
     [Affects=Nothing] DOMString? getAttribute(DOMString name);
     [Affects=Nothing] DOMString? getAttributeNS(DOMString? namespaceURI, DOMString localName);
     [RaisesException, CEReactions] void setAttribute(DOMString name, DOMString value);
@@ -109,7 +109,7 @@ dictionary CheckVisibilityOptions {
     [Affects=Nothing, MeasureAs=ElementGetInnerHTML, RuntimeEnabled=ElementGetInnerHTML] DOMString getInnerHTML(optional GetInnerHTMLOptions options = {});
 
     // Declarative Shadow DOM getHTML() function.
-    [Affects=Nothing, MeasureAs=ElementGetHTML, RaisesException, RuntimeEnabled=ElementGetHTML] DOMString getHTML(optional GetHTMLOptions options = {});
+    [Affects=Nothing, MeasureAs=ElementGetHTML, RaisesException] DOMString getHTML(optional GetHTMLOptions options = {});
 
     // Pointer Lock
     // https://w3c.github.io/pointerlock/#extensions-to-the-element-interface
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/global_event_handlers.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/global_event_handlers.idl
index 117451950..d6bcfbf14 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/global_event_handlers.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/global_event_handlers.idl
@@ -93,8 +93,8 @@ interface mixin GlobalEventHandlers {
   attribute EventHandler onseeking;
   attribute EventHandler onselect;
   attribute EventHandler onslotchange;
-  [RuntimeEnabled=CSSSnapChangedEvent] attribute EventHandler onsnapchanged;
-  [RuntimeEnabled=CSSSnapChangingEvent] attribute EventHandler onsnapchanging;
+  [RuntimeEnabled=CSSScrollSnapChangeEvent] attribute EventHandler onscrollsnapchange;
+  [RuntimeEnabled=CSSScrollSnapChangingEvent] attribute EventHandler onscrollsnapchanging;
   //attribute EventHandler onsort;
   attribute EventHandler onstalled;
   attribute EventHandler onsubmit;
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/part_root.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/part_root.idl
index a4f25303f..b647ecdc3 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/part_root.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/part_root.idl
@@ -18,17 +18,13 @@ interface mixin PartRootMixin {
   // document tree is cloned. In the case of a ChildPartRoot, only the children
   // between `previous_node` and `next_node` are included, inclusive. The
   // `clone()` method returns the cloned PartRoot.
-  [RaisesException] PartRoot clone(optional PartRootCloneOptions options);
+  [RaisesException] PartRoot clone();
   // Return the root container for the PartRoot, which is the Document or
   // DocumentFragment for a DocumentPartRoot, or the parent ContainerNode of
   // a ChildNodePart.
   readonly attribute Node rootContainer;
 };
 
-dictionary PartRootCloneOptions {
-  sequence<DOMString> attributeValues;
-};
-
 DocumentPartRoot includes PartRootMixin;
 ChildNodePart includes PartRootMixin;
 
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root.idl
index 5b4271ca0..d8b683148 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root.idl
@@ -46,15 +46,15 @@ interface ShadowRoot : DocumentFragment {
     [Affects=Nothing, MeasureAs=ElementGetInnerHTML, RuntimeEnabled=ElementGetInnerHTML] HTMLString getInnerHTML(optional GetInnerHTMLOptions options = {});
 
     // Declarative Shadow DOM getHTML() function.
-    [Affects=Nothing, MeasureAs=ElementGetHTML, RaisesException, RuntimeEnabled=ElementGetHTML] HTMLString getHTML(optional GetHTMLOptions options = {});
+    [Affects=Nothing, MeasureAs=ElementGetHTML, RaisesException] HTMLString getHTML(optional GetHTMLOptions options = {});
 
     // The serializable attribute controls whether the shadow root will be
     // serialized by getHTML({serializableShadowRoots:true}).
-    [RuntimeEnabled=ElementGetHTML] readonly attribute boolean serializable;
+    readonly attribute boolean serializable;
 
     // The clonable attribute controls whether the shadow root will be
     // cloned by DOM cloning operations.
-    [RuntimeEnabled=ShadowRootClonable] readonly attribute boolean clonable;
+    readonly attribute boolean clonable;
 
     // Scoped element creation APIs
     // https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries#scoped-element-creation-apis
diff --git a/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root_init.idl b/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root_init.idl
index 6e78be7ed..3baead603 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root_init.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/dom/shadow_root_init.idl
@@ -12,8 +12,8 @@ dictionary ShadowRootInit {
   boolean delegatesFocus;
   SlotAssignmentMode slotAssignment;
   [RuntimeEnabled=ScopedCustomElementRegistry] CustomElementRegistry registry;
-  [RuntimeEnabled=ElementGetHTML] boolean serializable;
-  [RuntimeEnabled=ShadowRootClonable] boolean clonable;
+  boolean serializable;
+  boolean clonable;
   // Note: if you add a parameter here, be sure to add it to the list of checks
   // in Element::attachShadow() for existing declarative shadow roots.
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/events/event_type_names.json5 b/tools/under-control/src/third_party/blink/renderer/core/events/event_type_names.json5
index 8ad0efae7..185e1208d 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/events/event_type_names.json5
+++ b/tools/under-control/src/third_party/blink/renderer/core/events/event_type_names.json5
@@ -295,8 +295,8 @@
     "signalingstatechange",
     "sinkchange",
     "slotchange",
-    "snapchanged",
-    "snapchanging",
+    "scrollsnapchange",
+    "scrollsnapchanging",
     "soundend",
     "soundstart",
     "sourceclose",
@@ -346,6 +346,7 @@
     "updateready",
     "updatestart",
     "upgradeneeded",
+    "validationstatuschange",
     "versionchange",
     "visibilitychange",
     "voiceschanged",
diff --git a/tools/under-control/src/third_party/blink/renderer/core/exported/web_view_impl.cc b/tools/under-control/src/third_party/blink/renderer/core/exported/web_view_impl.cc
index 173ca5a58..65c00aae8 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/exported/web_view_impl.cc
+++ b/tools/under-control/src/third_party/blink/renderer/core/exported/web_view_impl.cc
@@ -57,6 +57,7 @@
 #include "third_party/blink/public/mojom/frame/frame_replication_state.mojom-blink.h"
 #include "third_party/blink/public/mojom/input/focus_type.mojom-blink.h"
 #include "third_party/blink/public/mojom/page/draggable_region.mojom-blink.h"
+#include "third_party/blink/public/mojom/page/prerender_page_param.mojom.h"
 #include "third_party/blink/public/mojom/window_features/window_features.mojom-blink.h"
 #include "third_party/blink/public/platform/interface_registry.h"
 #include "third_party/blink/public/platform/platform.h"
@@ -402,12 +403,12 @@ ui::mojom::blink::WindowOpenDisposition NavigationPolicyToDisposition(
     case kNavigationPolicyLinkPreview:
       NOTREACHED_NORETURN();
   }
-  NOTREACHED() << "Unexpected NavigationPolicy";
+  NOTREACHED_IN_MIGRATION() << "Unexpected NavigationPolicy";
   return ui::mojom::blink::WindowOpenDisposition::IGNORE_ACTION;
 }
 
 // Records the queuing duration for activation IPC.
-void RecordPrerenderActivationSignalDelay() {
+void RecordPrerenderActivationSignalDelay(const String& metric_suffix) {
   auto* task = base::TaskAnnotator::CurrentTaskForThread();
 
   // It should be a Mojo call, so `RunTask` executes it as a non-delayed task.
@@ -416,8 +417,9 @@ void RecordPrerenderActivationSignalDelay() {
   base::TimeDelta queueing_time =
       !task->queue_time.is_null() ? base::TimeTicks::Now() - task->queue_time
                                   : base::TimeDelta();
-  base::UmaHistogramTimes("Prerender.Experimental.ActivationIPCDelay",
-                          queueing_time);
+  base::UmaHistogramTimes(
+      "Prerender.Experimental.ActivationIPCDelay" + metric_suffix.Ascii(),
+      queueing_time);
 }
 
 #if !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_WIN)
@@ -438,7 +440,7 @@ SkFontHinting RendererPreferencesToSkiaHinting(
       case gfx::FontRenderParams::HINTING_FULL:
         return SkFontHinting::kNormal;
       default:
-        NOTREACHED();
+        NOTREACHED_IN_MIGRATION();
         return SkFontHinting::kNormal;
     }
   }
@@ -454,7 +456,7 @@ SkFontHinting RendererPreferencesToSkiaHinting(
     case gfx::FontRenderParams::HINTING_FULL:
       return SkFontHinting::kFull;
     default:
-      NOTREACHED();
+      NOTREACHED_IN_MIGRATION();
       return SkFontHinting::kNormal;
   }
 }
@@ -467,7 +469,7 @@ SkFontHinting RendererPreferencesToSkiaHinting(
 WebView* WebView::Create(
     WebViewClient* client,
     bool is_hidden,
-    bool is_prerendering,
+    blink::mojom::PrerenderParamPtr prerender_param,
     bool is_inside_portal,
     std::optional<blink::FencedFrame::DeprecatedFencedFrameMode>
         fenced_frame_mode,
@@ -485,17 +487,17 @@ WebView* WebView::Create(
       client,
       is_hidden ? mojom::blink::PageVisibilityState::kHidden
                 : mojom::blink::PageVisibilityState::kVisible,
-      is_prerendering, is_inside_portal, fenced_frame_mode, compositing_enabled,
-      widgets_never_composited, To<WebViewImpl>(opener), std::move(page_handle),
-      agent_group_scheduler, session_storage_namespace_id,
-      std::move(page_base_background_color), browsing_context_group_info,
-      color_provider_colors);
+      std::move(prerender_param), is_inside_portal, fenced_frame_mode,
+      compositing_enabled, widgets_never_composited, To<WebViewImpl>(opener),
+      std::move(page_handle), agent_group_scheduler,
+      session_storage_namespace_id, std::move(page_base_background_color),
+      browsing_context_group_info, color_provider_colors);
 }
 
 WebViewImpl* WebViewImpl::Create(
     WebViewClient* client,
     mojom::blink::PageVisibilityState visibility,
-    bool is_prerendering,
+    blink::mojom::PrerenderParamPtr prerender_param,
     bool is_inside_portal,
     std::optional<blink::FencedFrame::DeprecatedFencedFrameMode>
         fenced_frame_mode,
@@ -509,8 +511,8 @@ WebViewImpl* WebViewImpl::Create(
     const BrowsingContextGroupInfo& browsing_context_group_info,
     const ColorProviderColorMaps* color_provider_colors) {
   return new WebViewImpl(
-      client, visibility, is_prerendering, is_inside_portal, fenced_frame_mode,
-      compositing_enabled, widgets_never_composited, opener,
+      client, visibility, std::move(prerender_param), is_inside_portal,
+      fenced_frame_mode, compositing_enabled, widgets_never_composited, opener,
       std::move(page_handle), agent_group_scheduler,
       session_storage_namespace_id, std::move(page_base_background_color),
       browsing_context_group_info, color_provider_colors);
@@ -566,7 +568,7 @@ void WebViewImpl::CloseWindow() {
 WebViewImpl::WebViewImpl(
     WebViewClient* client,
     mojom::blink::PageVisibilityState visibility,
-    bool is_prerendering,
+    blink::mojom::PrerenderParamPtr prerender_param,
     bool is_inside_portal,
     std::optional<blink::FencedFrame::DeprecatedFencedFrameMode>
         fenced_frame_mode,
@@ -612,7 +614,11 @@ WebViewImpl::WebViewImpl(
       *page_, session_storage_namespace_id_);
 
   SetVisibilityState(visibility, /*is_initial_state=*/true);
-  page_->SetIsPrerendering(is_prerendering);
+  if (prerender_param) {
+    page_->SetIsPrerendering(true);
+    page_->SetPrerenderMetricSuffix(
+        String(prerender_param->page_metric_suffix));
+  }
 
   // TODO(crbug.com/40287334): Remove the is_inside_portal parameter.
 
@@ -2268,61 +2274,47 @@ void WebViewImpl::AdvanceFocus(bool reverse) {
               : mojom::blink::FocusType::kForward);
 }
 
-double WebViewImpl::ZoomLevel() {
-  return zoom_level_;
+double WebViewImpl::ClampZoomLevel(double zoom_level) {
+  if (zoom_level < minimum_zoom_level_) {
+    return minimum_zoom_level_;
+  }
+  if (zoom_level > maximum_zoom_level_) {
+    return maximum_zoom_level_;
+  }
+  return zoom_level;
 }
 
-void WebViewImpl::PropagateZoomFactorToLocalFrameRoots(Frame* frame,
-                                                       float zoom_factor) {
-  auto* local_frame = DynamicTo<LocalFrame>(frame);
-  if (local_frame && local_frame->IsLocalRoot()) {
-    if (Document* document = local_frame->GetDocument()) {
-      auto* plugin_document = DynamicTo<PluginDocument>(document);
-      if (!plugin_document || !plugin_document->GetPluginView()) {
-        local_frame->SetPageZoomFactor(zoom_factor);
-      }
+double WebViewImpl::SetMainFrameZoomLevel(double zoom_level) {
+  if (zoom_factor_for_device_scale_factor_) {
+    if (compositor_device_scale_factor_override_) {
+      page_->SetInspectorDeviceScaleFactorOverride(
+          zoom_factor_for_device_scale_factor_ /
+          compositor_device_scale_factor_override_);
+    } else {
+      page_->SetInspectorDeviceScaleFactorOverride(1.0f);
     }
   }
 
-  for (Frame* child = frame->Tree().FirstChild(); child;
-       child = child->Tree().NextSibling())
-    PropagateZoomFactorToLocalFrameRoots(child, zoom_factor);
-}
-
-double WebViewImpl::SetZoomLevel(double zoom_level) {
-  double old_zoom_level = zoom_level_;
-  if (zoom_level < minimum_zoom_level_)
-    zoom_level_ = minimum_zoom_level_;
-  else if (zoom_level > maximum_zoom_level_)
-    zoom_level_ = maximum_zoom_level_;
-  else
-    zoom_level_ = zoom_level;
-
   float zoom_factor =
       zoom_factor_override_
           ? zoom_factor_override_
-          : static_cast<float>(PageZoomLevelToZoomFactor(zoom_level_));
+          : static_cast<float>(PageZoomLevelToZoomFactor(zoom_level));
   if (zoom_factor_for_device_scale_factor_) {
     if (compositor_device_scale_factor_override_) {
-      page_->SetInspectorDeviceScaleFactorOverride(
-          zoom_factor_for_device_scale_factor_ /
-          compositor_device_scale_factor_override_);
-
       zoom_factor *= compositor_device_scale_factor_override_;
     } else {
-      page_->SetInspectorDeviceScaleFactorOverride(1.0f);
       zoom_factor *= zoom_factor_for_device_scale_factor_;
     }
   }
-  PropagateZoomFactorToLocalFrameRoots(page_->MainFrame(), zoom_factor);
+  return zoom_factor;
+}
 
-  if (old_zoom_level != zoom_level_) {
-    for (auto& observer : observers_)
-      observer.OnZoomLevelChanged();
-    CancelPagePopup();
+void WebViewImpl::RecomputeMainFrameZoomFactor() {
+  if (auto* main_frame = MainFrameImpl()) {
+    if (auto* widget = main_frame->FrameWidgetImpl()) {
+      widget->SetZoomLevel(widget->GetZoomLevel());
+    }
   }
-
-  return zoom_level_;
 }
 
 float WebViewImpl::PageScaleFactor() const {
@@ -2377,7 +2369,7 @@ void WebViewImpl::SetZoomFactorForDeviceScaleFactor(
   // We can't early-return here if these are already equal, because we may
   // need to propagate the correct zoom factor to newly navigated frames.
   zoom_factor_for_device_scale_factor_ = zoom_factor_for_device_scale_factor;
-  SetZoomLevel(zoom_level_);
+  RecomputeMainFrameZoomFactor();
 }
 
 void WebViewImpl::SetPageLifecycleStateFromNewPageCommit(
@@ -3225,7 +3217,7 @@ void WebViewImpl::SetCompositorDeviceScaleFactorOverride(
     return;
   compositor_device_scale_factor_override_ = device_scale_factor;
   if (zoom_factor_for_device_scale_factor_) {
-    SetZoomLevel(ZoomLevel());
+    RecomputeMainFrameZoomFactor();
     return;
   }
 }
@@ -3419,7 +3411,7 @@ void WebViewImpl::ActivatePrerenderedPage(
     main_frame_document = local_frame->GetDocument();
   }
   if (main_frame_document) {
-    RecordPrerenderActivationSignalDelay();
+    RecordPrerenderActivationSignalDelay(GetPage()->PrerenderMetricSuffix());
   }
 
   for (Frame* frame = GetPage()->MainFrame(); frame;
@@ -3771,7 +3763,7 @@ void WebViewImpl::SetBackgroundColorOverrideForFullscreenController(
 
 void WebViewImpl::SetZoomFactorOverride(float zoom_factor) {
   zoom_factor_override_ = zoom_factor;
-  SetZoomLevel(ZoomLevel());
+  RecomputeMainFrameZoomFactor();
 }
 
 Element* WebViewImpl::FocusedElement() const {
@@ -4129,5 +4121,4 @@ void WebViewImpl::SetPageAttributionSupport(
 
   page->SetAttributionSupport(support);
 }
-
 }  // namespace blink
diff --git a/tools/under-control/src/third_party/blink/renderer/core/frame/settings.json5 b/tools/under-control/src/third_party/blink/renderer/core/frame/settings.json5
index 09a94ff7c..fd10a6aa2 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/frame/settings.json5
+++ b/tools/under-control/src/third_party/blink/renderer/core/frame/settings.json5
@@ -1100,7 +1100,7 @@
     {
       name: "preferredRootScrollbarColorScheme",
       initial: "mojom::blink::PreferredColorScheme::kLight",
-      invalidate: ["ColorScheme"],
+      invalidate: ["Paint"],
       type: "mojom::blink::PreferredColorScheme",
       include_paths: [
         "third_party/blink/public/mojom/css/preferred_color_scheme.mojom-shared.h"
@@ -1203,6 +1203,8 @@
       name: "bypassCSP",
       initial: false,
     },
+    // Enables automatic adjustments of text size on mobile. This enables the
+    // text autosizer, and controls whether text-size-adjust can apply.
     {
       name: "textAutosizingEnabled",
       initial: false,
diff --git a/tools/under-control/src/third_party/blink/renderer/core/html/canvas/text_metrics.idl b/tools/under-control/src/third_party/blink/renderer/core/html/canvas/text_metrics.idl
index b65d6d673..33b847e94 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/html/canvas/text_metrics.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/html/canvas/text_metrics.idl
@@ -29,7 +29,6 @@
 interface TextMetrics {
     // x-direction
     readonly attribute double width; // advance width
-    [RuntimeEnabled=ExtendedTextMetrics] readonly attribute FrozenArray<double> advances;
     readonly attribute double actualBoundingBoxLeft;
     readonly attribute double actualBoundingBoxRight;
 
@@ -43,4 +42,7 @@ interface TextMetrics {
     [RuntimeEnabled=TextMetricsBaselines] readonly attribute double ideographicBaseline;
     [RuntimeEnabled=ExtendedTextMetrics] readonly attribute double emHeightAscent;
     [RuntimeEnabled=ExtendedTextMetrics] readonly attribute double emHeightDescent;
+
+    // For selection
+    [RuntimeEnabled=ExtendedTextMetrics, RaisesException] sequence<DOMRectReadOnly> getSelectionRects([EnforceRange] unsigned long start, [EnforceRange] unsigned long end);
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/html/html_permission_element.idl b/tools/under-control/src/third_party/blink/renderer/core/html/html_permission_element.idl
index 2b785cda6..1993c2929 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/html/html_permission_element.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/html/html_permission_element.idl
@@ -7,6 +7,10 @@ interface HTMLPermissionElement : HTMLElement {
   [HTMLConstructor] constructor();
   [CEReactions, Reflect] attribute DOMString type;
 
+  readonly attribute boolean isValid;
+  readonly attribute DOMString invalidReason;
+
   attribute EventHandler onresolve;
   attribute EventHandler ondismiss;
+  attribute EventHandler onvalidationstatuschange;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/html/html_template_element.idl b/tools/under-control/src/third_party/blink/renderer/core/html/html_template_element.idl
index 086e5c513..19045256f 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/html/html_template_element.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/html/html_template_element.idl
@@ -42,9 +42,9 @@
     // to a shadow root; since the template no longer exists, these reflections
     // don't have anything to reflect.
     [Reflect,ReflectOnly=("open","closed")] attribute DOMString shadowRootMode;
-    [CEReactions,Reflect,RuntimeEnabled=TemplateDelegatesFocusReflection] attribute boolean shadowRootDelegatesFocus;
-    [CEReactions,Reflect,RuntimeEnabled=ShadowRootClonable] attribute boolean shadowRootClonable;
-    [Reflect, RuntimeEnabled=ElementGetHTML] attribute boolean shadowRootSerializable;
+    [CEReactions,Reflect] attribute boolean shadowRootDelegatesFocus;
+    [CEReactions,Reflect] attribute boolean shadowRootClonable;
+    [Reflect] attribute boolean shadowRootSerializable;
 
     // Used by the DOM Parts API
     [Reflect, RuntimeEnabled=DOMPartsAPI] attribute boolean parseparts;
diff --git a/tools/under-control/src/third_party/blink/renderer/core/origin_trials/origin_trial_context.cc b/tools/under-control/src/third_party/blink/renderer/core/origin_trials/origin_trial_context.cc
index 000506a0f..8872babe9 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/origin_trials/origin_trial_context.cc
+++ b/tools/under-control/src/third_party/blink/renderer/core/origin_trials/origin_trial_context.cc
@@ -130,7 +130,7 @@ std::ostream& operator<<(std::ostream& stream, OriginTrialTokenStatus status) {
     case OriginTrialTokenStatus::kUnknownTrial:
       return stream << "kUnknownTrial";
   }
-  NOTREACHED();
+  NOTREACHED_IN_MIGRATION();
   return stream;
 #else
   return stream << (static_cast<int>(status));
diff --git a/tools/under-control/src/third_party/blink/renderer/core/page/color_page_popup_controller.idl b/tools/under-control/src/third_party/blink/renderer/core/page/color_page_popup_controller.idl
index 21dec893d..cb52b3621 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/page/color_page_popup_controller.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/page/color_page_popup_controller.idl
@@ -10,5 +10,4 @@
     RuntimeEnabled=PagePopup
 ] interface ColorPagePopupController : PagePopupController {
     void openEyeDropper();
-    void openSystemColorChooser();
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/page/page_popup_controller.idl b/tools/under-control/src/third_party/blink/renderer/core/page/page_popup_controller.idl
index f2f933831..b11d2acfa 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/page/page_popup_controller.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/page/page_popup_controller.idl
@@ -46,5 +46,5 @@
     // rectangle to fit in the current screen. Popups sometimes need to be
     // positioned on other screens.
     void setWindowRect(long x, long y,long width, long height);
-    void setMenuListOptionsBoundsInAXTree(sequence<DOMRect> options_bounds);
+    void setMenuListOptionsBoundsInAXTree(sequence<DOMRect> options_bounds, boolean children_updated);
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/core/testing/internals.idl b/tools/under-control/src/third_party/blink/renderer/core/testing/internals.idl
index 6fe8a2374..963222781 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/testing/internals.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/testing/internals.idl
@@ -302,6 +302,7 @@ interface Internals {
     [RaisesException] void forceCompositingUpdate(Document document);
 
     void setDarkPreferredColorScheme(Document document);
+    void setDarkPreferredRootScrollbarColorScheme(Document document);
     void setForcedColorsAndDarkPreferredColorScheme(Document document);
 
     [RaisesException] void setShouldRevealPassword(Element element, boolean reveal);
diff --git a/tools/under-control/src/third_party/blink/renderer/core/timing/performance_resource_timing.idl b/tools/under-control/src/third_party/blink/renderer/core/timing/performance_resource_timing.idl
index ab7370d0b..9da8cd67a 100755
--- a/tools/under-control/src/third_party/blink/renderer/core/timing/performance_resource_timing.idl
+++ b/tools/under-control/src/third_party/blink/renderer/core/timing/performance_resource_timing.idl
@@ -41,6 +41,14 @@ interface PerformanceResourceTiming : PerformanceEntry {
     readonly attribute DOMString nextHopProtocol;
     [Measure] readonly attribute DOMString deliveryType;
     readonly attribute DOMHighResTimeStamp workerStart;
+    [RuntimeEnabled=ServiceWorkerStaticRouterTimingInfo]
+        readonly attribute DOMHighResTimeStamp workerRouterEvaluationStart;
+    [RuntimeEnabled=ServiceWorkerStaticRouterTimingInfo]
+        readonly attribute DOMHighResTimeStamp workerCacheLookupStart;
+    [RuntimeEnabled=ServiceWorkerStaticRouterTimingInfo]
+        readonly attribute DOMString matchedSourceType;
+    [RuntimeEnabled=ServiceWorkerStaticRouterTimingInfo]
+        readonly attribute DOMString finalSourceType;
     readonly attribute DOMHighResTimeStamp redirectStart;
     readonly attribute DOMHighResTimeStamp redirectEnd;
     readonly attribute DOMHighResTimeStamp fetchStart;
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/ai/ai.idl b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai.idl
new file mode 100755
index 000000000..a7eb1b30f
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai.idl
@@ -0,0 +1,60 @@
+// Copyright 2024 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(crbug.com/343126579): Add link to spec/explainer.
+enum AIModelAvailability {
+  "readily",
+  "after-download",
+  "no"
+};
+
+[
+  Exposed=Window,
+  RuntimeEnabled=ModelExecutionAPI
+]
+interface AI {
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AIModelAvailability> canCreateTextSession();
+  [
+    Measure,
+    ImplementedAs=canCreateTextSession,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AIModelAvailability> canCreateGenericSession();
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AITextSession> createTextSession(
+    optional AITextSessionOptions options = {}
+  );
+  [
+    Measure,
+    ImplementedAs=createTextSession,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AITextSession> createGenericSession(
+    optional AITextSessionOptions options = {}
+  );
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AITextSessionOptions> defaultTextSessionOptions();
+  [
+    Measure,
+    ImplementedAs=defaultTextSessionOptions,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<AITextSessionOptions> defaultGenericSessionOptions();
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session.idl b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session.idl
new file mode 100755
index 000000000..37d9b76bd
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session.idl
@@ -0,0 +1,43 @@
+// Copyright 2024 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(crbug.com/343126579): Add link to spec/explainer.
+[
+  Exposed=Window,
+  RuntimeEnabled=ModelExecutionAPI
+]
+interface AITextSession {
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<DOMString> prompt(DOMString input);
+  [
+    Measure,
+    ImplementedAs=prompt,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<DOMString> execute(DOMString input);
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  ReadableStream promptStreaming(DOMString input);
+  [
+    Measure,
+    ImplementedAs=promptStreaming,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  Promise<DOMString> executeStreaming(DOMString input);
+  [
+    Measure,
+    CallWith=ScriptState,
+    RaisesException
+  ]
+  void destroy();
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session_options.idl b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session_options.idl
similarity index 71%
rename from tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session_options.idl
rename to tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session_options.idl
index 4e6279c20..2068eff10 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session_options.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ai/ai_text_session_options.idl
@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-dictionary ModelGenericSessionOptions {
+// TODO(crbug.com/343126579): Add link to spec/explainer.
+dictionary AITextSessionOptions {
   [EnforceRange] unsigned long topK;
   float temperature;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/ai/dedicated_worker_global_scope_ai.idl b/tools/under-control/src/third_party/blink/renderer/modules/ai/dedicated_worker_global_scope_ai.idl
new file mode 100755
index 000000000..acf508445
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ai/dedicated_worker_global_scope_ai.idl
@@ -0,0 +1,14 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(crbug.com/343126579): Add link to spec/explainer.
+[
+    ImplementedAs=DOMAI,
+    RuntimeEnabled=ModelExecutionAPI
+] partial interface DedicatedWorkerGlobalScope {
+    [
+      Replaceable
+    ]
+    readonly attribute AI ai;
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/ai/window_ai.idl b/tools/under-control/src/third_party/blink/renderer/modules/ai/window_ai.idl
new file mode 100755
index 000000000..564d74552
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ai/window_ai.idl
@@ -0,0 +1,20 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(crbug.com/343126579): Add link to spec/explainer.
+[
+    ImplementedAs=DOMAI,
+    RuntimeEnabled=ModelExecutionAPI
+] partial interface Window {
+    [
+      Replaceable
+    ]
+    readonly attribute AI ai;
+    // TODO(crbug.com/341851444): Remove after confirming there is no usage.
+    [
+      Replaceable,
+      ImplementedAs=ai
+    ]
+    readonly attribute AI model;
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access.idl b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer.idl
similarity index 56%
rename from tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access.idl
rename to tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer.idl
index c831657fb..12b31f5f9 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer.idl
@@ -4,11 +4,11 @@
 
 // https://github.com/fserb/canvas2D/blob/master/spec/webgpu.md
 [
-    RuntimeEnabled=CanvasWebGPUAccess,
+    RuntimeEnabled=Canvas2dGPUTransfer,
     Exposed=(Window,Worker),
     SecureContext
-] interface mixin CanvasWebGPUAccess {
-  [RaisesException] GPUTexture beginWebGPUAccess(CanvasWebGPUAccessOption options);
-  [RaisesException] undefined endWebGPUAccess();
+] interface mixin Canvas2dGPUTransfer {
+  [RaisesException] GPUTexture transferToGPUTexture(Canvas2dGPUTransferOption options);
+  [RaisesException] undefined transferBackFromGPUTexture();
   GPUTextureFormat getTextureFormat();
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer_option.idl b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer_option.idl
new file mode 100755
index 000000000..3da939214
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_2d_gpu_transfer_option.idl
@@ -0,0 +1,19 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Used by method `transferToGPUTexture` as defined in
+// canvas_2d_gpu_transfer.idl
+dictionary Canvas2dGPUTransferOption {
+  // This GPUDevice will be given access to the canvas' texture.
+  GPUDevice device;
+
+  // This label will be assigned to the GPUTexture returned by
+  // transferToGPUTexture.
+  DOMString? label;
+
+  // This controls the GPUTextureUsage flags of the GPUTexture returned by
+  // transferToGPUTexture. The default value will return a canvas texture that
+  // is usable as a render attachment, and bindable as a 2D texture.
+  GPUTextureUsageFlags usage = 0x14;  // TEXTURE_BINDING | RENDER_ATTACHMENT
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.idl b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.idl
index ee02d822f..5edfbb82c 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_rendering_context_2d.idl
@@ -186,4 +186,4 @@ interface CanvasRenderingContext2D {
 };
 
 CanvasRenderingContext2D includes CanvasPath;
-CanvasRenderingContext2D includes CanvasWebGPUAccess;
+CanvasRenderingContext2D includes Canvas2dGPUTransfer;
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access_option.idl b/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access_option.idl
deleted file mode 100755
index 6bff3cdd9..000000000
--- a/tools/under-control/src/third_party/blink/renderer/modules/canvas/canvas2d/canvas_web_gpu_access_option.idl
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2024 The Chromium Authors
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Used by method `beginWebGPUAccess` as defined in canvas_web_gpu_access.idl
-dictionary CanvasWebGPUAccessOption {
-  // This GPUDevice will be given access to the canvas' texture.
-  GPUDevice device;
-
-  // This label will be assigned to the GPUTexture returned by beginWebGPUAccess.
-  DOMString? label;
-
-  // This controls the GPUTextureUsage flags of the GPUTexture returned by
-  // beginWebGPUAccess. (The returned texture might actually have additional
-  // texture usage flags beyond the requested flags.)
-  // The default value will return a canvas texture that is usable as a render
-  // attachment, and bindable as a 2D texture.
-  GPUTextureUsageFlags usage = 0x14;  // TEXTURE_BINDING | RENDER_ATTACHMENT
-};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.idl b/tools/under-control/src/third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.idl
index aeb999eaa..02b76a9b1 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.idl
@@ -125,4 +125,4 @@
 };
 
 OffscreenCanvasRenderingContext2D includes CanvasPath;
-OffscreenCanvasRenderingContext2D includes CanvasWebGPUAccess;
+OffscreenCanvasRenderingContext2D includes Canvas2dGPUTransfer;
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/digital_credential_request_options.idl b/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/digital_credential_request_options.idl
index e87acc74b..931c85b03 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/digital_credential_request_options.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/digital_credential_request_options.idl
@@ -10,5 +10,5 @@ dictionary DigitalCredentialRequestOptions {
 // https://wicg.github.io/digital-identities/#dom-identityrequestprovider
 dictionary IdentityRequestProvider {
   required DOMString protocol;
-  required DOMString request;
+  required (object or DOMString) request;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/identity_provider_config.idl b/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/identity_provider_config.idl
index 7a7fe840f..507f9950c 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/identity_provider_config.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/credentialmanagement/identity_provider_config.idl
@@ -12,6 +12,9 @@ dictionary IdentityProviderConfig {
   // Not marked as required to allow implementation of digital credentials.
   // See crbug.com/1416939.
   USVString clientId;
+  // The type of Identity Provider that is compatible with the RP.
+  // Used to only use compatible providers.
+  [RuntimeEnabled=FedCmIdPRegistration] DOMString type;
 };
 
 dictionary IdentityProviderRequestOptions : IdentityProviderConfig {
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_change_record.idl b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_change_record.idl
index 038fdc3d6..8b1a07bad 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_change_record.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_change_record.idl
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(https://crbug.com/1019297): Include spec link.
+// TODO(https://crbug.com/320563255): Include spec link.
 
 enum FileSystemChangeType {
-  "created",
-  "deleted",
+  "appeared",
+  "disappeared",
   "errored",
   "modified",
   "moved",
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer.idl b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer.idl
index 87e0dcf25..ae7e3fe6f 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer.idl
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(https://crbug.com/1019297): Include spec link.
+// TODO(https://crbug.com/320563255): Include spec link.
 // TODO(https://crbug.com/1444874): Measure usage.
 
 [
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_callback.idl b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_callback.idl
index 011152346..c220b6786 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_callback.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_callback.idl
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(https://crbug.com/1019297): Include spec link.
+// TODO(https://crbug.com/320563255): Include spec link.
 
 callback FileSystemObserverCallback = void (
   sequence<FileSystemChangeRecord> records,
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_observe_options.idl b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_observe_options.idl
index da450db76..00fba5f97 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_observe_options.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/file_system_access/file_system_observer_observe_options.idl
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(https://crbug.com/1019297): Include spec link.
+// TODO(https://crbug.com/320563255): Include spec link.
 
 dictionary FileSystemObserverObserveOptions {
   boolean recursive = false;
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/launch/launch_params.idl b/tools/under-control/src/third_party/blink/renderer/modules/launch/launch_params.idl
index eea70a1cd..d2e0f9cca 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/launch/launch_params.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/launch/launch_params.idl
@@ -9,6 +9,6 @@
     Exposed=Window,
     RuntimeEnabled=WebAppLaunchQueue
 ] interface LaunchParams {
-  [RuntimeEnabled=WebAppLaunchHandler] readonly attribute USVString targetURL;
+  readonly attribute USVString targetURL;
   [RuntimeEnabled=FileHandling] readonly attribute FrozenArray<FileSystemHandle> files;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/ml/webnn/ml_graph_builder.idl b/tools/under-control/src/third_party/blink/renderer/modules/ml/webnn/ml_graph_builder.idl
index 5352f1a00..f4d166037 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/ml/webnn/ml_graph_builder.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/ml/webnn/ml_graph_builder.idl
@@ -33,7 +33,6 @@ dictionary MLBatchNormalizationOptions {
   MLOperand bias;
   [EnforceRange] unsigned long axis = 1;
   float epsilon = 1e-5;
-  MLActivation activation;
 };
 
 dictionary MLConv2dOptions {
@@ -44,7 +43,6 @@ dictionary MLConv2dOptions {
   MLInputOperandLayout inputLayout = "nchw";
   MLConv2dFilterOperandLayout filterLayout = "oihw";
   MLOperand bias;
-  MLActivation activation;
 };
 
 dictionary MLConvTranspose2dOptions {
@@ -57,7 +55,6 @@ dictionary MLConvTranspose2dOptions {
   MLInputOperandLayout inputLayout = "nchw";
   MLConvTranspose2dFilterOperandLayout filterLayout = "iohw";
   MLOperand bias;
-  MLActivation activation;
 };
 
 dictionary MLGatherOptions {
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session.idl b/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session.idl
deleted file mode 100755
index ba077a9ec..000000000
--- a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_generic_session.idl
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2024 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-[
-  RuntimeEnabled=ModelExecutionAPI,
-  Exposed=Window
-]
-interface ModelGenericSession {
-  [Measure, CallWith=ScriptState, RaisesException] Promise<DOMString> execute(DOMString input);
-  [Measure, CallWith=ScriptState, RaisesException] ReadableStream executeStreaming(DOMString input);
-};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_manager.idl b/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_manager.idl
deleted file mode 100755
index 17e9e138c..000000000
--- a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/model_manager.idl
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2024 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-enum GenericModelAvailability {
-  "readily",
-  "after-download",
-  "no"
-};
-
-[
-  RuntimeEnabled=ModelExecutionAPI,
-  Exposed=Window
-]
-interface ModelManager {
-  [
-    Measure,
-    CallWith=ScriptState,
-    RaisesException
-  ]
-  Promise<GenericModelAvailability> canCreateGenericSession();
-  [
-    Measure,
-    CallWith=ScriptState,
-    RaisesException
-  ]
-  Promise<ModelGenericSession> createGenericSession(
-    optional ModelGenericSessionOptions options = {}
-  );
-  [
-    Measure,
-    CallWith=ScriptState,
-    RaisesException
-  ]
-  Promise<ModelGenericSessionOptions> defaultGenericSessionOptions();
-};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/window_model.idl b/tools/under-control/src/third_party/blink/renderer/modules/model_execution/window_model.idl
deleted file mode 100755
index ddf896716..000000000
--- a/tools/under-control/src/third_party/blink/renderer/modules/model_execution/window_model.idl
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2024 The Chromium Authors
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// TODO(leimy): Add link to spec/explainer?
-[
-    ImplementedAs=WindowModel,
-    RuntimeEnabled=ModelExecutionAPI
-] partial interface Window {
-    [Replaceable] readonly attribute ModelManager model;
-};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame.idl b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame.idl
index 0961a0f4c..291e54dfb 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame.idl
@@ -8,7 +8,7 @@
 [
     Exposed=(Window, DedicatedWorker)
 ] interface RTCEncodedAudioFrame {
-    [RuntimeEnabled=RTCEncodedFrameSetMetadata, Measure, RaisesException]
+    [Measure, RaisesException]
     constructor (RTCEncodedAudioFrame originalFrame, optional RTCEncodedAudioFrameOptions options = {});
     readonly attribute unsigned long timestamp;  // RTP timestamp.
     attribute ArrayBuffer data;
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl
index eff06ec7c..4f62e834a 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl
@@ -14,7 +14,7 @@ enum RTCEncodedVideoFrameType {
 [
     Exposed=(Window, DedicatedWorker)
 ] interface RTCEncodedVideoFrame {
-    [RuntimeEnabled=RTCEncodedFrameSetMetadata, Measure, RaisesException]
+    [Measure, RaisesException]
     constructor (RTCEncodedVideoFrame originalFrame, optional RTCEncodedVideoFrameOptions options = {});
     readonly attribute RTCEncodedVideoFrameType type;
     readonly attribute unsigned long timestamp;  // RTP timestamp.
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.idl b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.idl
index 9f5744ceb..3559d3bd3 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.idl
@@ -138,6 +138,8 @@ enum RTCPeerConnectionState {
     // https://w3c.github.io/webrtc-pc/#sec.cert-mgmt
     [RaisesException, CallWith=ScriptState] static Promise<RTCCertificate> generateCertificate(AlgorithmIdentifier keygenAlgorithm);
 
+    [SameObject, RuntimeEnabled=RTCRtpTransport] readonly attribute RTCRtpTransport rtpTransport;
+
     // Non-standard or removed from the spec:
     [Measure] sequence<MediaStream> getLocalStreams();
     [Measure] sequence<MediaStream> getRemoteStreams();
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transport.idl b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transport.idl
new file mode 100755
index 000000000..3aa934227
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transport.idl
@@ -0,0 +1,6 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[Exposed=Window, RuntimeEnabled=RTCRtpTransport]
+interface RTCRtpTransport {};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_context.idl b/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_context.idl
index 65038c1be..7afb66c0a 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_context.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_context.idl
@@ -52,6 +52,8 @@ dictionary AudioSinkOptions {
     [HighEntropy=Direct, MeasureAs=AudioContextBaseLatency] readonly attribute double baseLatency;
     [HighEntropy=Direct, MeasureAs=AudioContextOutputLatency] readonly attribute double outputLatency;
 
+    [RuntimeEnabled=AudioContextPlayoutStats, SameObject] readonly attribute AudioPlayoutStats playoutStats;
+
     [RaisesException, MeasureAs=AudioContextCreateMediaElementSource] MediaElementAudioSourceNode createMediaElementSource(HTMLMediaElement mediaElement);
     [RaisesException, MeasureAs=AudioContextCreateMediaStreamSource] MediaStreamAudioSourceNode createMediaStreamSource(MediaStream mediaStream);
     [RaisesException, MeasureAs=AudioContextCreateMediaStreamDestination] MediaStreamAudioDestinationNode createMediaStreamDestination();
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_playout_stats.idl b/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_playout_stats.idl
new file mode 100755
index 000000000..78464e2e0
--- /dev/null
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webaudio/audio_playout_stats.idl
@@ -0,0 +1,15 @@
+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[RuntimeEnabled=AudioContextPlayoutStats, Exposed=Window, SecureContext
+] interface AudioPlayoutStats {
+    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp fallbackFramesDuration;
+    [CallWith=ScriptState] readonly attribute unsigned long fallbackFramesEvents;
+    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp totalFramesDuration;
+    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp averageLatency;
+    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp minimumLatency;
+    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp maximumLatency;
+    [CallWith=ScriptState] void resetLatency();
+    [CallWith=ScriptState] object toJSON();
+};
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track.idl b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track.idl
index 06b2a26ed..90a18a032 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track.idl
@@ -5,6 +5,7 @@
 // https://github.com/WICG/web-codecs
 
 [
+    SecureContext,
     Exposed=(Window,DedicatedWorker)
 ] interface ImageTrack {
   // The number of frames in the image.
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track_list.idl b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track_list.idl
index 3806db9b9..cc82a0b21 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track_list.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/image_track_list.idl
@@ -5,6 +5,7 @@
 // https://github.com/WICG/web-codecs
 
 [
+    SecureContext,
     Exposed=(Window,DedicatedWorker)
 ] interface ImageTrackList {
   getter ImageTrack([EnforceRange] unsigned long index);
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/video_encoder_config.idl b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/video_encoder_config.idl
index 4a3f07777..5e5181d1f 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/video_encoder_config.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webcodecs/video_encoder_config.idl
@@ -34,6 +34,5 @@ dictionary VideoEncoderConfig {
   LatencyMode latencyMode = "quality";
 
   // MediaStreamTrack Content Hints (https://www.w3.org/TR/mst-content-hint/)
-  [RuntimeEnabled=WebCodecsContentHint]
   DOMString contentHint = "";
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgl/webgl_texture.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgl/webgl_texture.idl
index 8c3758b3b..0242e54f6 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgl/webgl_texture.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgl/webgl_texture.idl
@@ -28,8 +28,4 @@
 [
     Exposed=(Window,Worker)
 ] interface WebGLTexture : WebGLObject {
-    [RuntimeEnabled=ExtraWebGLVideoTextureMetadata] readonly attribute unsigned long lastUploadedVideoWidth;
-    [RuntimeEnabled=ExtraWebGLVideoTextureMetadata] readonly attribute unsigned long lastUploadedVideoHeight;
-    [RuntimeEnabled=ExtraWebGLVideoTextureMetadata] readonly attribute double lastUploadedVideoTimestamp;
-    [RuntimeEnabled=ExtraWebGLVideoTextureMetadata] readonly attribute boolean lastUploadedVideoFrameWasSkipped;
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_adapter.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_adapter.idl
index 2f6a8eda5..cdc2c7eb7 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_adapter.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_adapter.idl
@@ -10,9 +10,11 @@
 ] interface GPUAdapter {
     [SameObject] readonly attribute GPUSupportedFeatures features;
     [SameObject] readonly attribute GPUSupportedLimits limits;
+    [SameObject, RuntimeEnabled=WebGPUAdapterInfoAttribute] readonly attribute GPUAdapterInfo info;
     readonly attribute boolean isFallbackAdapter;
     [RuntimeEnabled=WebGPUExperimentalFeatures] readonly attribute boolean isCompatibilityMode;
 
     [CallWith=ScriptState] Promise<GPUDevice> requestDevice(optional GPUDeviceDescriptor descriptor = {});
-    [CallWith=ScriptState] Promise<GPUAdapterInfo> requestAdapterInfo();
+    // TODO(crbug.com/335383516): Remove this once synchronous info attribute is implemented.
+    [CallWith=ScriptState, Measure] Promise<GPUAdapterInfo> requestAdapterInfo();
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_compute_pass_encoder.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_compute_pass_encoder.idl
index d7ce97f12..d358eb9d3 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_compute_pass_encoder.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_compute_pass_encoder.idl
@@ -14,7 +14,7 @@
                                                 optional GPUSize32 workgroupCountZ = 1);
     [NoAllocDirectCall] void dispatchWorkgroupsIndirect(GPUBuffer indirectBuffer,
                                                         GPUSize64 indirectOffset);
-    [RaisesException] void writeTimestamp(GPUQuerySet querySet, GPUSize32 queryIndex);
+    [RaisesException, NoAllocDirectCall] void writeTimestamp(GPUQuerySet querySet, GPUSize32 queryIndex);
 
     [NoAllocDirectCall] void end();
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_programmable_pass_encoder.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_programmable_pass_encoder.idl
index 84c022f79..de563e781 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_programmable_pass_encoder.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_programmable_pass_encoder.idl
@@ -5,12 +5,12 @@
 // https://gpuweb.github.io/gpuweb/
 
 interface mixin GPUProgrammablePassEncoder {
-    void setBindGroup(GPUIndex32 index, GPUBindGroup? bindGroup,
+    [NoAllocDirectCall] void setBindGroup(GPUIndex32 index, GPUBindGroup? bindGroup,
                       optional sequence<GPUBufferDynamicOffset> dynamicOffsets);
 
-    [RaisesException] void setBindGroup(
+    [RaisesException, NoAllocDirectCall] void setBindGroup(
         GPUIndex32 index, GPUBindGroup? bindGroup,
-        [AllowShared, FlexibleArrayBufferView] Uint32Array dynamicOffsetsData,
+        [AllowShared, FlexibleArrayBufferView, BufferSourceTypeNoSizeLimit] Uint32Array dynamicOffsetsData,
         GPUSize64 dynamicOffsetsDataStart,
         GPUSize32 dynamicOffsetsDataLength);
 
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_queue.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_queue.idl
index 85e2da28d..910017b07 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_queue.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_queue.idl
@@ -12,30 +12,27 @@
 
     [CallWith=ScriptState] Promise<undefined> onSubmittedWorkDone();
 
-    // TODO(crbug.com/1088107): Merge these overloads into one with
-    // [AllowShared] BufferSource (or whatever the upstream spec has), which
-    // would expand this to allow SharedArrayBuffer (can't be implemented now).
     [CallWith=ScriptState, RaisesException] void writeBuffer(
         GPUBuffer buffer,
         GPUSize64 bufferOffset,
-        [AllowShared] ArrayBufferView data,
+        [AllowShared, BufferSourceTypeNoSizeLimit] ArrayBufferView data,
         optional GPUSize64 dataElementOffset = 0,
         optional GPUSize64 dataElementCount);
     [CallWith=ScriptState, RaisesException] void writeBuffer(
         GPUBuffer buffer,
         GPUSize64 bufferOffset,
-        ArrayBuffer data,
+        [AllowShared, BufferSourceTypeNoSizeLimit] ArrayBuffer data,
         optional GPUSize64 dataByteOffset = 0,
         optional GPUSize64 byteSize);
 
     [CallWith=ScriptState, RaisesException] void writeTexture(
         GPUImageCopyTexture destination,
-        [AllowShared] ArrayBufferView data,
+        [AllowShared, BufferSourceTypeNoSizeLimit] ArrayBufferView data,
         GPUImageDataLayout dataLayout,
         GPUExtent3D size);
     [CallWith=ScriptState, RaisesException] void writeTexture(
         GPUImageCopyTexture destination,
-        ArrayBuffer data,
+        [AllowShared, BufferSourceTypeNoSizeLimit] ArrayBuffer data,
         GPUImageDataLayout dataLayout,
         GPUExtent3D size);
 
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_render_pass_encoder.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_render_pass_encoder.idl
index 9f94ac17d..12d607413 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_render_pass_encoder.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_render_pass_encoder.idl
@@ -23,7 +23,7 @@
     void executeBundles(sequence<GPURenderBundle> bundles);
     [NoAllocDirectCall] void beginOcclusionQuery(GPUSize32 queryIndex);
     [NoAllocDirectCall] void endOcclusionQuery();
-    [RaisesException] void writeTimestamp(GPUQuerySet querySet, GPUSize32 queryIndex);
+    [RaisesException, NoAllocDirectCall] void writeTimestamp(GPUQuerySet querySet, GPUSize32 queryIndex);
 
     [NoAllocDirectCall] void end();
 };
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_supported_features.idl b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_supported_features.idl
index d0ffdec48..ab5347663 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_supported_features.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/webgpu/gpu_supported_features.idl
@@ -21,6 +21,7 @@ enum GPUFeatureName {
     "chromium-experimental-timestamp-query-inside-passes",
     "chromium-experimental-subgroups",
     "chromium-experimental-subgroup-uniform-control-flow",
+    "dual-source-blending",
 };
 
 [
diff --git a/tools/under-control/src/third_party/blink/renderer/modules/xr/xr_depth_state_init.idl b/tools/under-control/src/third_party/blink/renderer/modules/xr/xr_depth_state_init.idl
index be708b09f..8c1db67d5 100755
--- a/tools/under-control/src/third_party/blink/renderer/modules/xr/xr_depth_state_init.idl
+++ b/tools/under-control/src/third_party/blink/renderer/modules/xr/xr_depth_state_init.idl
@@ -10,6 +10,7 @@ enum XRDepthUsage {
 enum XRDepthDataFormat {
   "luminance-alpha",
   "float32",
+  "unsigned-short",
 };
 
 dictionary XRDepthStateInit {