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

chrome/browser/resources/options/browser_options.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() {
   var OptionsPage = options.OptionsPage;
   var Page = cr.ui.pageManager.Page;
   var PageManager = cr.ui.pageManager.PageManager;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
@@ skipping 105 matching lines @@
           }
         };
       } else {
         $('advanced-settings-expander').hidden = true;
         $('advanced-settings').hidden = true;
       }
 
       $('advanced-settings').addEventListener('webkitTransitionEnd',
           this.updateAdvancedSettingsExpander_.bind(this));
 
+      if (cr.isChromeOS && loadTimeData.getBoolean('showVersion')) {
+        $('version-button').hidden = false;
+        $('version-button').addEventListener('click', function() {
+          PageManager.showPageByName('help');
+          chrome.send('coreOptionsUserMetricsAction',
+                      ['Options_About']);
+        });
+      }
+
       if (cr.isChromeOS) {
         UIAccountTweaks.applyGuestSessionVisibility(document);
         UIAccountTweaks.applyPublicSessionVisibility(document);
         if (loadTimeData.getBoolean('secondaryUser'))
           $('secondary-user-banner').hidden = false;
       }
 
       // Sync (Sign in) section.
       this.updateSyncState_(loadTimeData.getValue('syncData'));
 
@@ skipping 1779 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });