Implement tail processing for AudioNodes

third_party/WebKit/Source/modules/webaudio/MediaStreamAudioDestinationNode.h

 /*
  * Copyright (C) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 33 matching lines @@
   ~MediaStreamAudioDestinationHandler() override;
 
   MediaStream* Stream() { return stream_.Get(); }
 
   // AudioHandler.
   void Process(size_t frames_to_process) override;
   void SetChannelCount(unsigned long, ExceptionState&) override;
 
   unsigned long MaxChannelCount() const;
 
+  bool RequiresTailProcessing() const override { return false; }
+
  private:
   MediaStreamAudioDestinationHandler(AudioNode&, size_t number_of_channels);
   // As an audio source, we will never propagate silence.
   bool PropagatesSilence() const override { return false; }
 
   // This Persistent doesn't make a reference cycle.
   Persistent<MediaStream> stream_;
   // Accessed by main thread and during audio thread processing.
   //
   // TODO: try to avoid such access during audio thread processing.
@@ skipping 21 matching lines @@
 
   MediaStream* stream() const;
 
  private:
   MediaStreamAudioDestinationNode(BaseAudioContext&, size_t number_of_channels);
 };
 
 }  // namespace blink
 
 #endif  // MediaStreamAudioDestinationNode_h