identity: Also synchronize GAP events in sync=1
identity: Also synchronize GAP events in sync=1

https://bugzilla.gnome.org/show_bug.cgi?id=601853

krichter722/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,mparis/gstreamer,mparis/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,mparis/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,krichter722/gstreamer,centricular/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,krichter722/gstreamer,krichter722/gstreamer,centricular/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer