+// Gets statistics for the media track. If |mediaStreamTrack| is nil statistics
+// are gathered for all tracks.
+// Statistics information will be reported via RTCStatsDelegate.
+- (BOOL)getStatsWithDelegate:(id<RTCStatsDelegate>)delegate
+ mediaStreamTrack:(RTCMediaStreamTrack*)mediaStreamTrack
+ statsOutputLevel:(RTCStatsOutputLevel)statsOutputLevel;