Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/WaveShaperNode.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 13 matching lines @@
 
 #ifndef WaveShaperNode_h
 #define WaveShaperNode_h
 
 #include "core/dom/DOMTypedArray.h"
 #include "modules/webaudio/AudioNode.h"
 #include "modules/webaudio/WaveShaperProcessor.h"
 
 namespace blink {
 
+class AbstractAudioContext;
 class ExceptionState;
 
 class WaveShaperNode final : public AudioNode {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static WaveShaperNode* create(AudioContext& context)
+    static WaveShaperNode* create(AbstractAudioContext& context)
     {
         return new WaveShaperNode(context);
     }
 
     // setCurve() is called on the main thread.
     void setCurve(DOMFloat32Array*, ExceptionState&);
     DOMFloat32Array* curve();
 
     void setOversample(const String&);
     String oversample() const;
 
 private:
-    explicit WaveShaperNode(AudioContext&);
+    explicit WaveShaperNode(AbstractAudioContext&);
 
     WaveShaperProcessor* waveShaperProcessor() const;
 };
 
 } // namespace blink
 
 #endif // WaveShaperNode_h