Bug 1286454 part 3 - remove MediaDecoderReader::mVideoDiscontinuity since it leads to nothing now; r=jwwang

MozReview-Commit-ID: 1JMngmA61Bd

--HG--
extra : rebase_source : 10e74faa50c897f130006014956d85f4c3886020

dom/media/MediaDecoderReader.cpp

@@ -224,7 +224,6 @@ MediaDecoderReader::MediaDecoderReader(AbstractMediaDecoder* aDecoder)
   , mIgnoreAudioOutputFormat(false)
   , mHitAudioDecodeError(false)
   , mShutdown(false)
-  , mVideoDiscontinuity(false)
   , mIsSuspended(mTaskQueue, true,
                  "MediaDecoderReader::mIsSuspended (Canonical)")
 {
@@ -290,7 +289,6 @@ nsresult MediaDecoderReader::ResetDecode(TrackSet aTracks)
 {
   if (aTracks.contains(TrackInfo::kVideoTrack)) {
     VideoQueue().Reset();
-    mVideoDiscontinuity = true;
     mBaseVideoPromise.RejectIfExists(CANCELED, __func__);
   }
 
@@ -456,9 +454,6 @@ MediaDecoderReader::RequestVideoData(bool aSkipToNextKeyframe,
   }
   if (VideoQueue().GetSize() > 0) {
     RefPtr<VideoData> v = VideoQueue().PopFront();
-    if (v && mVideoDiscontinuity) {
-      mVideoDiscontinuity = false;
-    }
     mBaseVideoPromise.Resolve(v, __func__);
   } else if (VideoQueue().IsFinished()) {
     mBaseVideoPromise.Reject(END_OF_STREAM, __func__);

dom/media/MediaDecoderReader.h

@@ -464,9 +464,6 @@ private:
   MozPromiseHolder<MediaDataPromise> mBaseAudioPromise;
   MozPromiseHolder<MediaDataPromise> mBaseVideoPromise;
 
-  // Flags whether a the next audio/video sample comes after a "gap" or
-  // "discontinuity" in the stream. For example after a seek.
-  bool mVideoDiscontinuity;
   Canonical<bool> mIsSuspended;
 
   MediaEventListener mDataArrivedListener;