Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/BiquadFilterNode.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 BiquadFilterNode_h
 #define BiquadFilterNode_h
 
 #include "core/dom/DOMTypedArray.h"
 #include "modules/webaudio/AudioNode.h"
 #include "modules/webaudio/BiquadProcessor.h"
 
 namespace blink {
 
+class AbstractAudioContext;
 class AudioParam;
 
 class BiquadFilterNode final : public AudioNode {
     DEFINE_WRAPPERTYPEINFO();
 public:
     // These must be defined as in the .idl file and must match those in the BiquadProcessor class.
     enum {
         LOWPASS = 0,
         HIGHPASS = 1,
         BANDPASS = 2,
         LOWSHELF = 3,
         HIGHSHELF = 4,
         PEAKING = 5,
         NOTCH = 6,
         ALLPASS = 7
     };
 
-    static BiquadFilterNode* create(AudioContext& context, float sampleRate)
+    static BiquadFilterNode* create(AbstractAudioContext& context, float sampleRate)
     {
         return new BiquadFilterNode(context, sampleRate);
     }
     DECLARE_VIRTUAL_TRACE();
 
     String type() const;
     void setType(const String&);
 
     AudioParam* frequency() { return m_frequency; }
     AudioParam* q() { return m_q; }
     AudioParam* gain() { return m_gain; }
     AudioParam* detune() { return m_detune; }
 
     // Get the magnitude and phase response of the filter at the given
     // set of frequencies (in Hz). The phase response is in radians.
     void getFrequencyResponse(const DOMFloat32Array* frequencyHz, DOMFloat32Array* magResponse, DOMFloat32Array* phaseResponse);
 
 private:
-    BiquadFilterNode(AudioContext&, float sampleRate);
+    BiquadFilterNode(AbstractAudioContext&, float sampleRate);
 
     BiquadProcessor* biquadProcessor() const;
     bool setType(unsigned); // Returns true on success.
 
     Member<AudioParam> m_frequency;
     Member<AudioParam> m_q;
     Member<AudioParam> m_gain;
     Member<AudioParam> m_detune;
 };
 
 } // namespace blink
 
 #endif // BiquadFilterNode_h