Web Audio: Rename AudioParam class to AudioParamHandler.

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/AudioBasicProcessorNode.h"
 #include "modules/webaudio/BiquadProcessor.h"
 
 namespace blink {
 
-class AudioParam;
+class AudioParamHandler;
 
 class BiquadFilterNode final : public AudioBasicProcessorNode {
     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)
     {
         return new BiquadFilterNode(context, sampleRate);
     }
 
     String type() const;
     void setType(const String&);
 
-    AudioParam* frequency() { return biquadProcessor()->parameter1(); }
-    AudioParam* q() { return biquadProcessor()->parameter2(); }
-    AudioParam* gain() { return biquadProcessor()->parameter3(); }
-    AudioParam* detune() { return biquadProcessor()->parameter4(); }
+    AudioParamHandler* frequency() { return biquadProcessor()->parameter1(); }
+    AudioParamHandler* q() { return biquadProcessor()->parameter2(); }
+    AudioParamHandler* gain() { return biquadProcessor()->parameter3(); }
+    AudioParamHandler* detune() { return biquadProcessor()->parameter4(); }
 
     // 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);
 
     BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(processor()); }
     bool setType(unsigned); // Returns true on success.
 };
 
 } // namespace blink
 
 #endif // BiquadFilterNode_h