import changes from `dev' branch of rmottola/Arctic-Fox:

- CLOSED TREE. Bug 1174077 - send silence instead of nothing to the decoded stream in CORS case. r=roc. (cf576aac9)
- Bug 1177466 - Clean up places calling MaybeStartPlayback() in MediaDecoderStateMachine. r=cpearce (a2ef0f47b)
- Remaining of Bug 1168008 - Replace 'Consumer' with 'Request' in MediaPromise (4e77e4f42)
- bug 1137076 remove declaration of undefined OmxDecoder::ProcessCachedData() r=edwin (90ef83ee9)
- bug 1137076 mark some methods as private r=edwin (e9f4dd0a1)
- Bug 1173001 - Fix up some task queue naming to make MediaDecoderReader consistent with MDSM. r=jww (879b186ea)

dom/media/MediaDecoderStateMachine.cpp

@@ -447,9 +447,11 @@ void MediaDecoderStateMachine::SendStreamData()
   bool finished =
       (!mInfo.HasAudio() || AudioQueue().IsFinished()) &&
       (!mInfo.HasVideo() || VideoQueue().IsFinished());
-  if (mDecoder->IsSameOriginMedia()) {
+
+  {
     SourceMediaStream* mediaStream = stream->mStream;
     StreamTime endPosition = 0;
+    const bool isSameOrigin = mDecoder->IsSameOriginMedia();
 
     if (!stream->mStreamInitialized) {
       if (mInfo.HasAudio()) {
@@ -487,6 +489,9 @@ void MediaDecoderStateMachine::SendStreamData()
       for (uint32_t i = 0; i < audio.Length(); ++i) {
         SendStreamAudio(audio[i], stream, &output);
       }
+      if (!isSameOrigin) {
+        output.ReplaceWithDisabled();
+      }
       // |mNextAudioTime| is updated as we process each audio sample in
       // SendStreamAudio(). This is consistent with how |mNextVideoTime|
       // is updated for video samples.
@@ -549,6 +554,9 @@ void MediaDecoderStateMachine::SendStreamData()
                       v->mTime, v->GetEndTime());
         }
       }
+      if (!isSameOrigin) {
+        output.ReplaceWithDisabled();
+      }
       if (output.GetDuration() > 0) {
         mediaStream->AppendToTrack(videoTrackId, &output);
       }
@@ -2347,7 +2355,6 @@ MediaDecoderStateMachine::FinishDecodeFirstFrame()
   // So we need to check if this has occurred, else our decode pipeline won't
   // run (since it doesn't need to) and we won't detect end of stream.
   CheckIfDecodeComplete();
-  MaybeStartPlayback();
 
   if (mQueuedSeek.Exists()) {
     mPendingSeek.Steal(mQueuedSeek);
@@ -2901,12 +2908,6 @@ void MediaDecoderStateMachine::UpdateRenderedVideoFrames()
     }
   }
 
-  // We've got enough data to keep playing until at least the next frame.
-  // Start playing now if need be.
-  if ((mFragmentEndTime >= 0 && clock_time < mFragmentEndTime) || mFragmentEndTime < 0) {
-    MaybeStartPlayback();
-  }
-
   // Cap the current time to the larger of the audio and video end time.
   // This ensures that if we're running off the system clock, we don't
   // advance the clock to after the media end time.