Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/ConvolverNode.h

 /*
  * Copyright (C) 2010, 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 57 matching lines @@
     // Normalize the impulse response or not. Must default to true.
     bool m_normalize;
 
     // TODO(tkent): Use FRIEND_TEST macro provided by gtest_prod.h
     friend class ConvolverNodeTest_ReverbLifetime_Test;
 };
 
 class MODULES_EXPORT ConvolverNode final : public AudioNode {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static ConvolverNode* create(AudioContext&, float sampleRate);
+    static ConvolverNode* create(AbstractAudioContext&, float sampleRate);
 
     AudioBuffer* buffer() const;
     void setBuffer(AudioBuffer*, ExceptionState&);
     bool normalize() const;
     void setNormalize(bool);
 
 private:
-    ConvolverNode(AudioContext&, float sampleRate);
+    ConvolverNode(AbstractAudioContext&, float sampleRate);
     ConvolverHandler& convolverHandler() const;
 
     // TODO(tkent): Use FRIEND_TEST macro provided by gtest_prod.h
     friend class ConvolverNodeTest_ReverbLifetime_Test;
 };
 
 } // namespace blink
 
 #endif // ConvolverNode_h