[Mac] Fix themes for fullscreen windows.
[Mac] Fix themes for fullscreen windows.

BUG=None
TEST=Omnibox focus ring for fullscreen windows should not be black.
Review URL: http://codereview.chromium.org/657053

git-svn-id: http://src.chromium.org/svn/trunk/src@39842 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 4bf6b19c738fc4b6d41c3998e0881ed2d00720d5
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser