bindings: Adds virtual ScriptWrappable::wrap method.

Source/modules/webaudio/AudioSourceNode.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
@@ skipping 16 matching lines @@
  */
 
 #ifndef AudioSourceNode_h
 #define AudioSourceNode_h
 
 #include "modules/webaudio/AudioNode.h"
 
 namespace blink {
 
 class AudioSourceNode : public AudioNode {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     AudioSourceNode(AudioContext* context, float sampleRate)
         : AudioNode(context, sampleRate)
     {
         ScriptWrappable::init(this);
     }
 protected:
     virtual double tailTime() const OVERRIDE FINAL { return 0; }
     virtual double latencyTime() const OVERRIDE FINAL { return 0; }
 };
 
 } // namespace blink
 
 #endif // AudioSourceNode_h