Bug 1286454 part 2 - remove MediaDecoderReader::mAudioDiscontinuity since it leads to nothing now; r=jwwang

MozReview-Commit-ID: DjOXLa5aDm1

--HG--
extra : rebase_source : 1ada8cb696ffdd884723a2c75634a3edfcad1815

dom/media/MediaDecoderReader.cpp

@@ -224,7 +224,6 @@ MediaDecoderReader::MediaDecoderReader(AbstractMediaDecoder* aDecoder)
   , mIgnoreAudioOutputFormat(false)
   , mHitAudioDecodeError(false)
   , mShutdown(false)
-  , mAudioDiscontinuity(false)
   , mVideoDiscontinuity(false)
   , mIsSuspended(mTaskQueue, true,
                  "MediaDecoderReader::mIsSuspended (Canonical)")
@@ -297,7 +296,6 @@ nsresult MediaDecoderReader::ResetDecode(TrackSet aTracks)
 
   if (aTracks.contains(TrackInfo::kAudioTrack)) {
     AudioQueue().Reset();
-    mAudioDiscontinuity = true;
     mBaseAudioPromise.RejectIfExists(CANCELED, __func__);
   }
 
@@ -493,9 +491,6 @@ MediaDecoderReader::RequestAudioData()
   }
   if (AudioQueue().GetSize() > 0) {
     RefPtr<AudioData> a = AudioQueue().PopFront();
-    if (mAudioDiscontinuity) {
-      mAudioDiscontinuity = false;
-    }
     mBaseAudioPromise.Resolve(a, __func__);
   } else if (AudioQueue().IsFinished()) {
     mBaseAudioPromise.Reject(mHitAudioDecodeError ? DECODE_ERROR : END_OF_STREAM, __func__);

dom/media/MediaDecoderReader.h

@@ -466,7 +466,6 @@ private:
 
   // Flags whether a the next audio/video sample comes after a "gap" or
   // "discontinuity" in the stream. For example after a seek.
-  bool mAudioDiscontinuity;
   bool mVideoDiscontinuity;
   Canonical<bool> mIsSuspended;