Unreviewed GTK gardening. Skip the IndexedDB tests for now as the feature is going
through substantial changes that don't ensure constant proper functionality.

* platform/gtk-wk2/TestExpectations:
* platform/gtk/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156616 268f45cc-cd09-0410-ab3c-d52691b4dbfc