check: cast element in ASSERT_SET_STATE.
check: cast element in ASSERT_SET_STATE.

https://bugzilla.gnome.org/show_bug.cgi?id=744777

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