Bug 1316211. P5 - remove IsAsync() and its callers. r=gerald

MozReview-Commit-ID: CT2gyEak2Qz

--HG--
extra : rebase_source : 205bf82c8abe7da9026bff6daab7562a5981ea39
extra : source : a6a543c1d90133036caada487799cac064e2f3f3

dom/media/MediaDecoderReader.h

@@ -223,12 +223,6 @@ public:
     return mTaskQueue;
   }
 
-  // Returns true if the reader implements RequestAudioData()
-  // and RequestVideoData() asynchronously, rather than using the
-  // implementation in this class to adapt the old synchronous to
-  // the newer async model.
-  virtual bool IsAsync() const = 0;
-
   // Returns true if this decoder reader uses hardware accelerated video
   // decoding.
   virtual bool VideoIsHardwareAccelerated() const = 0;

dom/media/MediaDecoderReaderWrapper.h

@@ -53,7 +53,6 @@ public:
   void ResetDecode(TrackSet aTracks);
 
   nsresult Init() { return mReader->Init(); }
-  bool IsAsync() const { return mReader->IsAsync(); }
   bool UseBufferingHeuristics() const { return mReader->UseBufferingHeuristics(); }
 
   bool VideoIsHardwareAccelerated() const {

dom/media/MediaDecoderStateMachine.cpp

@@ -2255,8 +2255,7 @@ DecodeMetadataState::OnMetadataRead(MetadataHolder&& aMetadata)
   }
 
   if (mMaster->HasVideo()) {
-    SLOG("Video decode isAsync=%d HWAccel=%d videoQueueSize=%d",
-         Reader()->IsAsync(),
+    SLOG("Video decode HWAccel=%d videoQueueSize=%d",
          Reader()->VideoIsHardwareAccelerated(),
          mMaster->GetAmpleVideoFrames());
   }
@@ -3918,7 +3917,7 @@ MediaDecoderStateMachine::SetAudioCaptured(bool aCaptured)
 uint32_t MediaDecoderStateMachine::GetAmpleVideoFrames() const
 {
   MOZ_ASSERT(OnTaskQueue());
-  return (mReader->IsAsync() && mReader->VideoIsHardwareAccelerated())
+  return mReader->VideoIsHardwareAccelerated()
          ? std::max<uint32_t>(sVideoQueueHWAccelSize, MIN_VIDEO_QUEUE_SIZE)
          : std::max<uint32_t>(sVideoQueueDefaultSize, MIN_VIDEO_QUEUE_SIZE);
 }

dom/media/MediaFormatReader.h

@@ -59,8 +59,6 @@ public:
 
   RefPtr<ShutdownPromise> Shutdown() override;
 
-  bool IsAsync() const override { return true; }
-
   bool VideoIsHardwareAccelerated() const override;
 
   bool IsWaitForDataSupported() const override { return true; }