Bug 1109644. Part 4: Make MediaEngineGonkVideoSource use GetEndOfAppendedData instead of aLastEndTime. r=jesup

--HG--
extra : rebase_source : 0899d9e42cd42b2ab4ef1d0d4cf600ccc7f49a3f

dom/media/webrtc/MediaEngineGonkVideoSource.cpp

@@ -82,7 +82,7 @@ MediaEngineGonkVideoSource::NotifyPull(MediaStreamGraph* aGraph,
 
   // Note: we're not giving up mImage here
   nsRefPtr<layers::Image> image = mImage;
-  StreamTime delta = aDesiredTime - aLastEndTime;
+  StreamTime delta = aDesiredTime - aSource->GetEndOfAppendedData(aID);
   LOGFRAME(("NotifyPull, desired = %ld, delta = %ld %s", (int64_t) aDesiredTime,
             (int64_t) delta, image ? "" : "<null>"));