options: Remove a bunch of useless:

chrome/browser/resources/options/language_add_language_overlay.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.
 
 ///////////////////////////////////////////////////////////////////////////////
 // AddLanguageOverlay class:
 
 cr.define('options', function() {
   /** @const */ var OptionsPage = options.OptionsPage;
 
   /**
    * Encapsulated handling of ChromeOS add language overlay page.
    * @constructor
    */
   function AddLanguageOverlay() {
     OptionsPage.call(this, 'addLanguage',
                      loadTimeData.getString('addButton'),
                      'add-language-overlay-page');
   }
 
   cr.addSingletonGetter(AddLanguageOverlay);
 
   AddLanguageOverlay.prototype = {
     // Inherit AddLanguageOverlay from OptionsPage.
     __proto__: OptionsPage.prototype,
 
-    /**
-     * Initializes AddLanguageOverlay page.
-     * Calls base class implementation to starts preference initialization.
-     */
+    /** @override */
     initializePage: function() {
       // Call base class implementation to starts preference initialization.
       OptionsPage.prototype.initializePage.call(this);
 
       // Set up the cancel button.
       $('add-language-overlay-cancel-button').onclick = function(e) {
         OptionsPage.closeOverlay();
       };
 
       // Create the language list with which users can add a language.
@@ skipping 11 matching lines @@
         option.textContent = displayText;
         addLanguageList.appendChild(option);
       }
     },
   };
 
   return {
     AddLanguageOverlay: AddLanguageOverlay
   };
 });