Notify the root widget the the Theme changes when FrameTypeChanged() is evoked
Notify the root widget the the Theme changes when FrameTypeChanged() is evoked

BUG=chromium-os:9922
TEST=Change the theme.  Check that the buttons are the right color.

Review URL: http://codereview.chromium.org/5861002

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@69934 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser