Revert "GTK: Remove calls that no longer exist and just call the base unref."

This is causing crashes. This reverts r122389.

BUG=79722,116274


Review URL: http://codereview.chromium.org/9537019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124254 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed