separate about page into its own page (included in chrome://chrome)

chrome/browser/resources/options2/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.
 
 var AddLanguageOverlay = options.AddLanguageOverlay;
 var AdvancedOptions = options.AdvancedOptions;
 var AlertOverlay = options.AlertOverlay;
 var AutofillEditAddressOverlay = options.AutofillEditAddressOverlay;
 var AutofillEditCreditCardOverlay = options.AutofillEditCreditCardOverlay;
 var AutofillOptions = options.AutofillOptions;
@@ skipping 61 matching lines @@
                               [$('advancedOptionsButton')]);
   OptionsPage.register(PersonalOptions.getInstance());
   OptionsPage.registerSubPage(AutofillOptions.getInstance(),
                               PersonalOptions.getInstance(),
                               [$('autofill-settings')]);
   OptionsPage.registerSubPage(PasswordManager.getInstance(),
                               PersonalOptions.getInstance(),
                               [$('manage-passwords')]);
   if (cr.isChromeOS) {
     OptionsPage.register(SystemOptions.getInstance());
-    OptionsPage.registerSubPage(AboutPage.getInstance(),
-                                SystemOptions.getInstance());
     OptionsPage.registerSubPage(LanguageOptions.getInstance(),
                                 SystemOptions.getInstance(),
                                 [$('language-button')]);
     OptionsPage.registerSubPage(
         new OptionsPage('languageChewing',
                         templateData.languageChewingPageTabTitle,
                         'languageChewingPage'),
         LanguageOptions.getInstance());
     OptionsPage.registerSubPage(
         new OptionsPage('languageHangul',
@@ skipping 140 matching lines @@
 
 document.addEventListener('DOMContentLoaded', load);
 
 window.onpopstate = function(e) {
   options.OptionsPage.setState(e.state);
 };
 
 window.onbeforeunload = function() {
   options.OptionsPage.willClose();
 };