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

chrome/browser/resources/help/channel_change_page.css

 /* Copyright 2013 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.
  */
 
 #channel-change-page {
   min-height: 200px;
   width: 500px;
 }
 
 .channel-change-page-channel label {
   margin-left: 10px;
 }
 
 .channel-change-page-channel {
   display: block;
-  margin: 15px 25px;
+  margin: 0 25px;

[Dan Beam, 2014/08/13 02:50:46]

why are you making design changes in this CL?

[michaelpg, 2014/08/13 08:12:11]

SettingsFormatWebUITest.RadioCheckboxStyleCheck requires an ancestor div have
the "radio" class for consistent formatting. But I'll just add an exemption to
that test instead.

[Dan Beam, 2014/08/13 17:03:18]

i'm cool with it if that's why, just wanted to understand :)

 }
 
 .show-when-selected-channel-requires-powerwash,
 .show-when-selected-channel-requires-delayed-update,
 .show-when-selected-channel-good,
 .show-when-selected-channel-unstable {
   display: none !important;
 }
 
 .selected-channel-requires-powerwash
 .show-when-selected-channel-requires-powerwash,
 .selected-channel-requires-delayed-update
 .show-when-selected-channel-requires-delayed-update,
 .selected-channel-good .show-when-selected-channel-good,
 .selected-channel-unstable .show-when-selected-channel-unstable {
   display: block !important;
 }