gtk: remove a "fast path" that wasn't actually correct
gtk: remove a "fast path" that wasn't actually correct

The function involved relied on internals of how the toolbar worked;
apparently in my version of GTK it was not correct.

BUG=40862
TEST=hit ctl-shift-B, chrome no longer hangs (on my system)

Review URL: http://codereview.chromium.org/1578024

git-svn-id: http://src.chromium.org/svn/trunk/src@44022 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 2b1d684181f8119436374448303b1d5ba72e4ded
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