Bug 878363 - Silence pragma warnings from gstreamer libraries r=ted
Bug 859199 - Load GStreamer libraries at runtime r=doublec
Bug 879995 - Fix assertion failure in gstreamer backend with fragmented mp4 videos r=alessandro.d
Bug 874305 - Support older versions of gstreamer r=alessandro.d
Bug 876305 - Cap the max number of audio buffers gstreamer can use r=alessandro.d
Bug 876305 - Pass the media mimetype on to the gstreamer backend r=alessandro.d