Integrate About page into Settings for Chrome OS settings in a window.

chrome/browser/resources/options/search_page.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 Page = cr.ui.pageManager.Page;
   /** @const */ var PageManager = cr.ui.pageManager.PageManager;
 
   /**
    * Encapsulated handling of a search bubble.
@@ skipping 139 matching lines @@
                                 this.keyDownEventHandler_.bind(this));
     },
 
     /** @override */
     get sticky() {
       return true;
     },
 
     /**
      * Called after this page has shown.
+     * @override
      */
     didShowPage: function() {
-      // This method is called by the Options page after all pages have
-      // had their visibilty attribute set.  At this point we can perform the
-      // search specific DOM manipulation.
+      // This method is called by PageManager after all pages have had their
+      // visibility attribute set. At this point we can perform the
+      // search-specific DOM manipulation.
       this.setSearchActive_(true);
     },
 
     /**
      * Called before this page will be hidden.
+     * @override
      */
     willHidePage: function() {
-      // This method is called by the Options page before all pages have
-      // their visibilty attribute set.  Before that happens, we need to
-      // undo the search specific DOM manipulation that was performed in
-      // didShowPage.
+      // This method is called by PageManager before all pages have had their
+      // visibility attribute set. Before that happens, we need to undo the
+      // search-specific DOM manipulation that was performed in didShowPage.
       this.setSearchActive_(false);
     },
 
     /**
      * Update the UI to reflect whether we are in a search state.
      * @param {boolean} active True if we are on the search page.
      * @private
      */
     setSearchActive_: function(active) {
       // It's fine to exit if search wasn't active and we're not going to
@@ skipping 382 matching lines @@
     // Trim beginning and ending whitespace.
     return text.replace(/^\s+|\s+$/g, '');
   };
 
   // Export
   return {
     SearchPage: SearchPage
   };
 
 });