Bug 1432779 - P3. Properly set channel map layout after seeking. r=padenot

MozReview-Commit-ID: 5FY9hdaijhf

dom/media/MediaData.cpp

@@ -98,7 +98,8 @@ AudioData::TransferAndUpdateTimestampAndDuration(AudioData* aOther,
                                       aOther->mFrames,
                                       Move(aOther->mAudioData),
                                       aOther->mChannels,
-                                      aOther->mRate);
+                                      aOther->mRate,
+                                      aOther->mChannelMap);
   return v.forget();
 }
 

dom/media/MediaDecoderStateMachine.cpp

@@ -1241,7 +1241,7 @@ protected:
     RefPtr<AudioData> data(new AudioData(
       aAudio->mOffset, mSeekJob.mTarget->GetTime(),
       duration, frames, Move(audioData), channels,
-      aAudio->mRate));
+      aAudio->mRate, aAudio->mChannelMap));
     MOZ_ASSERT(AudioQueue().GetSize() == 0,
                "Should be the 1st sample after seeking");
     mMaster->PushAudio(data);