Eliminate free calls of static methods

This was caught by a newer compiler release.  These were missed in the
last audit we did before releasing v2.5.0.

Change-Id: I4abd29e965c95b56eb83c61294f8a7dbaacae990

lib/media/adaptation_set_criteria.js

@@ -162,17 +162,14 @@ shaka.media.PreferenceBasedCriteria = class {
    */
   static filterByLanguage_(variants, preferredLanguage) {
     const LanguageUtils = shaka.util.LanguageUtils;
-    const findClosestLocale = LanguageUtils.findClosestLocale;
-    const getLocaleForVariant = LanguageUtils.getLocaleForVariant;
-    const normalize = LanguageUtils.normalize;
 
     /** @type {string} */
-    const preferredLocale = normalize(preferredLanguage);
+    const preferredLocale = LanguageUtils.normalize(preferredLanguage);
 
     /** @type {?string} */
-    const closestLocale = findClosestLocale(
+    const closestLocale = LanguageUtils.findClosestLocale(
         preferredLocale,
-        variants.map((variant) => getLocaleForVariant(variant)));
+        variants.map((variant) => LanguageUtils.getLocaleForVariant(variant)));
 
     // There were no locales close to what we preferred.
     if (!closestLocale) {
@@ -181,7 +178,7 @@ shaka.media.PreferenceBasedCriteria = class {
 
     // Find the variants that use the closest variant.
     return variants.filter((variant) => {
-      return closestLocale == getLocaleForVariant(variant);
+      return closestLocale == LanguageUtils.getLocaleForVariant(variant);
     });
   }
 

lib/net/networking_engine.js

@@ -307,7 +307,7 @@ shaka.net.NetworkingEngine.prototype.destroy = function() {
  * @export
  */
 shaka.net.NetworkingEngine.prototype.request = function(type, request) {
-  const cloneObject = shaka.util.ObjectUtils.cloneObject;
+  const ObjectUtils = shaka.util.ObjectUtils;
   const numBytesRemainingObj =
       new shaka.net.NetworkingEngine.NumBytesRemainingClass();
 
@@ -336,9 +336,9 @@ shaka.net.NetworkingEngine.prototype.request = function(type, request) {
   request.method = request.method || 'GET';
   request.headers = request.headers || {};
   request.retryParameters = request.retryParameters ?
-      cloneObject(request.retryParameters) :
+      ObjectUtils.cloneObject(request.retryParameters) :
       shaka.net.NetworkingEngine.defaultRetryParameters();
-  request.uris = cloneObject(request.uris);
+  request.uris = ObjectUtils.cloneObject(request.uris);
 
   // Apply the registered filters to the request.
   const requestFilterOperation = this.filterRequest_(type, request);