In r116134, a XvfbDriver was introduced that is shared by both Qt and Gtk ports. This makes GtkDriver redundant, so it should be removed.
Created attachment 140383 [details] Patch
Comment on attachment 140383 [details] Patch r=me
Comment on attachment 140383 [details] Patch Clearing flags on attachment: 140383 Committed r116212: <http://trac.webkit.org/changeset/116212>
All reviewed patches have been landed. Closing bug.