options: Remove a bunch of useless:

chrome/browser/resources/options/managed_user_learn_more.js

 // Copyright 2013 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() {
   var OptionsPage = options.OptionsPage;
 
   /**
    * ManagedUserLearnMore class.
    * Encapsulated handling of the 'Learn more...' overlay page.
    * @constructor
    * @class
    */
   function ManagedUserLearnMoreOverlay() {
     OptionsPage.call(this, 'managedUserLearnMore',
                      loadTimeData.getString('managedUserLearnMoreTitle'),
                      'managed-user-learn-more');
   };
 
   cr.addSingletonGetter(ManagedUserLearnMoreOverlay);
 
   ManagedUserLearnMoreOverlay.prototype = {
     // Inherit from OptionsPage.
     __proto__: OptionsPage.prototype,
 
-    /**
-     * Initialize the page.
-     */
+    /** @override */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       $('managed-user-learn-more-done').onclick = function(event) {
         OptionsPage.closeOverlay();
       };
     },
   };
 
   // Export
   return {
     ManagedUserLearnMoreOverlay: ManagedUserLearnMoreOverlay,
   };
 });