GTK: Erase the thin green line on the floating NTP bookmark bar (un-themed mode).
GTK: Erase the thin green line on the floating NTP bookmark bar (un-themed mode).

BUG=26740

Review URL: http://codereview.chromium.org/371005

git-svn-id: http://src.chromium.org/svn/trunk/src@31193 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 0c1f6ba2cf99f2f9b6b4a775baa8f35978a745f9
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