sink: Only accept video/x-surface with opengl support
sink: Only accept video/x-surface with opengl support

lubosz/clutter-gst,ystreet/clutter-gst,lubosz/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst,GNOME/clutter-gst,lubosz/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst