Fix netflix notification from tor tabs appearing on normal tabs

fix #14227

Test Plan:
1. open tor tab
2. go to https://www.netflix.com
3. you should not see a widevine notification.
4. switch back to a regular tab. no notification should appear.
5. open a non-tor tab and repeat step 2. you should see a widevine
   notification

app/renderer/components/main/main.js

@@ -539,7 +539,6 @@ class Main extends React.Component {
     const widevinePanelDetail = currentWindow.get('widevinePanelDetail', Immutable.Map())
     const loginRequiredDetails = basicAuthState.getLoginRequiredDetail(state, activeTabId)
     const focused = isFocused(state)
-    const isTor = frameStateUtil.isTor(activeFrame)
 
     const props = {}
     // used in renderer
@@ -560,7 +559,7 @@ class Main extends React.Component {
       !!currentWindow.get('braveryPanelDetail')
     props.showClearData = currentWindow.getIn(['ui', 'isClearBrowsingDataPanelVisible'], false)
     props.showImportData = currentWindow.has('importBrowserDataDetail')
-    props.showWidevine = currentWindow.getIn(['widevinePanelDetail', 'shown']) && !isLinux && !isTor
+    props.showWidevine = currentWindow.getIn(['widevinePanelDetail', 'shown']) && !isLinux
     props.showAutoFillAddress = currentWindow.has('autofillAddressDetail')
     props.showAutoFillCC = currentWindow.has('autofillCreditCardDetail')
     props.showLogin = !!loginRequiredDetails

app/renderer/rendererTabEvents.js

@@ -512,6 +512,11 @@ function allowRunningWidevinePlugin (tabId, frame) {
  *   accepted
  */
 function showWidevineNotification (tabId, frame, noWidevineCallback, widevineCallback) {
+  if (frameStateUtil.isTor(frame)) {
+    // Never show widevine prompts on a Tor tab (needed for
+    // https://github.com/brave/browser-laptop/issues/13626)
+    return
+  }
   // https://www.nfl.com is said to be a widevine site but it actually uses Flash for me Oct 10, 2016
   const widevineSites = ['https://www.netflix.com',
     'http://bitmovin.com',