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

chrome/browser/resources/options/options_bundle.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.
 //
 // This file exists to aggregate all of the javascript used by the
 // settings page into a single file which will be flattened and served
 // as a single resource.
 <include src="preferences.js">
 <include src="controlled_setting.js">
 <include src="deletable_item_list.js">
 <include src="editable_text_field.js">
 <include src="hotword_search_setting_indicator.js">
 <include src="inline_editable_list.js">
 <include src="options_page.js">
 <include src="pref_ui.js">
 <include src="settings_dialog.js">
 <include src="settings_banner.js">
 <if expr="chromeos">
 <include src="../chromeos/user_images_grid.js">
+<include src="../help/channel_change_page.js">
+<include src="../help/help_page.js">
 <include src="../../../../ui/webui/resources/js/chromeos/ui_account_tweaks.js">
 <include src="chromeos/change_picture_options.js">
 <include src="chromeos/internet_detail_ip_address_field.js">
 <include src="chromeos/internet_detail.js">
 <include src="chromeos/network_list.js">
 <include src="chromeos/preferred_networks.js">
 <include src="chromeos/bluetooth_device_list.js">
 <include src="chromeos/bluetooth_add_device_overlay.js">
 <include src="chromeos/bluetooth_pair_device_overlay.js">
 <include src="chromeos/accounts_options.js">
@@ skipping 10 matching lines @@
 var ChangePictureOptions = options.ChangePictureOptions;
 var ConsumerManagementOverlay = options.ConsumerManagementOverlay;
 var DetailsInternetPage = options.internet.DetailsInternetPage;
 var DisplayOptions = options.DisplayOptions;
 var DisplayOverscan = options.DisplayOverscan;
 var BluetoothOptions = options.BluetoothOptions;
 var BluetoothPairing = options.BluetoothPairing;
 var KeyboardOverlay = options.KeyboardOverlay;
 var PointerOverlay = options.PointerOverlay;
 var UIAccountTweaks = uiAccountTweaks.UIAccountTweaks;
+var HelpPage = help.HelpPage;
+var ChannelChangePage = help.ChannelChangePage;
 </if>
 <if expr="use_nss">
 <include src="certificate_tree.js">
 <include src="certificate_manager.js">
 <include src="certificate_restore_overlay.js">
 <include src="certificate_backup_overlay.js">
 <include src="certificate_edit_ca_trust_overlay.js">
 <include src="certificate_import_error_overlay.js">
 var CertificateManager = options.CertificateManager;
 var CertificateRestoreOverlay = options.CertificateRestoreOverlay;
@@ skipping 51 matching lines @@
 <include src="supervised_user_list.js">
 <include src="supervised_user_list_data.js">
 <include src="website_settings.js">
 <include src="../sync_setup_overlay.js">
 <include src="../uber/uber_page_manager_observer.js">
 <include src="../uber/uber_utils.js">
 <include src="options.js">
 <if expr="enable_settings_app">
 <include src="options_settings_app.js">
 </if>