Implement AudioScheduledSourceNode

third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ConstantSourceNode_h
 #define ConstantSourceNode_h
 
 #include "modules/webaudio/AudioParam.h"
 #include "modules/webaudio/AudioScheduledSourceNode.h"
 #include "platform/audio/AudioBus.h"
@@ skipping 25 matching lines @@
                         AudioParamHandler& offset);
 
   // If we are no longer playing, propogate silence ahead to downstream nodes.
   bool propagatesSilence() const override;
 
   RefPtr<AudioParamHandler> m_offset;
   AudioFloatArray m_sampleAccurateValues;
 };
 
 class ConstantSourceNode final : public AudioScheduledSourceNode {
+  USING_GARBAGE_COLLECTED_MIXIN(ConstantSourceNode);

[hongchan, 2016/12/01 00:11:22]

Just curious - so this only can be set up in the terminal class?

[Raymond Toy, 2016/12/01 18:48:32]

Removed here and for OscillatorNode.

I will have to let haraken tell me if that's right or now.  It compiles and runs
the tests fine, FWIW.

   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static ConstantSourceNode* create(BaseAudioContext&, ExceptionState&);
   static ConstantSourceNode* create(BaseAudioContext*,
                                     const ConstantSourceOptions&,
                                     ExceptionState&);
   DECLARE_VIRTUAL_TRACE();
 
   AudioParam* offset();
 
  private:
   ConstantSourceNode(BaseAudioContext&);
   ConstantSourceHandler& constantSourceHandler() const;
 
   Member<AudioParam> m_offset;
 };
 
 }  // namespace blink
 
 #endif  // ConstantSourceNode_h