Draw the theme overlay.  I hadn't implemented this previously because I didn't have an example theme that does this.
Draw the theme overlay.  I hadn't implemented this previously because
I didn't have an example theme that does this.

TEST=Install the Folders theme from the theme gallery and you should
  see a paperclip and some paper in the theme.

Review URL: http://codereview.chromium.org/165002


git-svn-id: http://src.chromium.org/svn/trunk/src@22539 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f80f3a19ff50e3c7c9499d3efb940b0525414f7c
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