options: Remove a bunch of useless:

chrome/browser/resources/options/content_settings.js

 // Copyright (c) 2012 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.
 
 cr.define('options', function() {
   /** @const */ var OptionsPage = options.OptionsPage;
 
   //////////////////////////////////////////////////////////////////////////////
   // ContentSettings class:
 
   /**
    * Encapsulated handling of content settings page.
    * @constructor
    */
   function ContentSettings() {
     this.activeNavTab = null;
     OptionsPage.call(this, 'content',
                      loadTimeData.getString('contentSettingsPageTabTitle'),
                      'content-settings-page');
   }
 
   cr.addSingletonGetter(ContentSettings);
 
   ContentSettings.prototype = {
     __proto__: OptionsPage.prototype,
 
+    /** @override */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       var exceptionsButtons =
           this.pageDiv.querySelectorAll('.exceptions-list-button');
       for (var i = 0; i < exceptionsButtons.length; i++) {
         exceptionsButtons[i].onclick = function(event) {
           var page = ContentSettingsExceptionsArea.getInstance();
 
           // Add on the proper hash for the content type, and store that in the
@@ skipping 262 matching lines @@
     var deviceSelect = $('media-select-camera');
     chrome.send('setDefaultCaptureDevice', ['camera', deviceSelect.value]);
   };
 
   // Export
   return {
     ContentSettings: ContentSettings
   };
 
 });