The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5302e55e8bdefbc8364c889e79d185c06e6a3dda

commit 5302e55e8bdefbc8364c889e79d185c06e6a3dda
Author: dschuyler <dschuyler@chromium.org>
Date: Thu Mar 31 22:53:51 2016

[MD settings] theme name shown in sub-label, wallpaper chrome os only

This CL causes the sub-label for the theme setting to
show the current theme name and the wall paper app
row only appears on chrome os. There is also a change
to expand the font settings sub-page properly.

BUG= 598462 ,  531786 ,  559457 

Review URL: https://codereview.chromium.org/1841973004

Cr-Commit-Position: refs/heads/master@{#384424}

[modify] https://crrev.com/5302e55e8bdefbc8364c889e79d185c06e6a3dda/chrome/browser/extensions/api/settings_private/prefs_util.cc
[modify] https://crrev.com/5302e55e8bdefbc8364c889e79d185c06e6a3dda/chrome/browser/resources/settings/appearance_page/appearance_page.html
[modify] https://crrev.com/5302e55e8bdefbc8364c889e79d185c06e6a3dda/chrome/browser/resources/settings/appearance_page/appearance_page.js
[modify] https://crrev.com/5302e55e8bdefbc8364c889e79d185c06e6a3dda/chrome/browser/resources/settings/basic_page/basic_page.html
[modify] https://crrev.com/5302e55e8bdefbc8364c889e79d185c06e6a3dda/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc