ScriptProcessor buffer size should be consistent with callback size

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

 /*
  * Copyright (C) 2011, 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 32 matching lines @@
   // AudioHandler
   void dispose() override;
   void initialize() override;
   void uninitialize() override;
   void setChannelCount(unsigned long, ExceptionState&) override;
 
   // AudioDestinationHandler
   void startRendering() override;
   void stopRendering() override;
   unsigned long maxChannelCount() const override;
+  // Returns the rendering callback buffer size.
+  size_t callbackBufferSize() const override;
 
  private:
   explicit DefaultAudioDestinationHandler(AudioNode&);
   void createDestination();
 
   std::unique_ptr<AudioDestination> m_destination;
   String m_inputDeviceId;
   unsigned m_numberOfInputChannels;
 };
 
 class DefaultAudioDestinationNode final : public AudioDestinationNode {
  public:
   static DefaultAudioDestinationNode* create(BaseAudioContext*);
 
+  size_t callbackBufferSize() const { return handler().callbackBufferSize(); };
+
  private:
   explicit DefaultAudioDestinationNode(BaseAudioContext&);
 };
 
 }  // namespace blink
 
 #endif  // DefaultAudioDestinationNode_h