GTK: Toggle set-above property on bookmark bar event box when showing it.
GTK: Toggle set-above property on bookmark bar event box when showing it.

BUG=34564
TEST=In both normal theme mode and gtk theme mode,
a) doesn't regress 33220
b) floating bookmark bar accepts input

Review URL: http://codereview.chromium.org/577005

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@38257 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