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

chrome/browser/resources/options/options_bundle.js

Index: chrome/browser/resources/options/options_bundle.js
diff --git a/chrome/browser/resources/options/options_bundle.js b/chrome/browser/resources/options/options_bundle.js
index 6e0130b9fedcc7aad42df7eec53ff334a379ea9c..5bcaf721ab25597468de32afe180ed14e1a810de 100644
--- a/chrome/browser/resources/options/options_bundle.js
+++ b/chrome/browser/resources/options/options_bundle.js
@@ -17,6 +17,8 @@
 <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">
@@ -47,6 +49,8 @@ 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">