Revert of WebAudio: Remove AudioNode::RefType.

Source/modules/webaudio/AudioNodeOutput.cpp

 /*
  * 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 142 matching lines @@
 
 void AudioNodeOutput::addInput(AudioNodeInput* input)
 {
     ASSERT(context()->isGraphOwner());
 
     ASSERT(input);
     if (!input)
         return;
 
     m_inputs.add(input);
-    m_inputNodes.add(input->node());
-    input->node()->makeConnection();
 }
 
 void AudioNodeOutput::removeInput(AudioNodeInput* input)
 {
     ASSERT(context()->isGraphOwner());
 
     ASSERT(input);
     if (!input)
         return;
 
     m_inputs.remove(input);
-    input->node()->breakConnection();
-    m_inputNodes.remove(input->node());
 }
 
 void AudioNodeOutput::disconnectAllInputs()
 {
     ASSERT(context()->isGraphOwner());
 
     // AudioNodeInput::disconnect() changes m_inputs by calling removeInput().
     while (!m_inputs.isEmpty()) {
         AudioNodeInput* input = *m_inputs.begin();
         input->disconnect(this);
@@ skipping 61 matching lines @@
             AudioNodeInput* input = *i;
             input->enable(this);
         }
         m_isEnabled = true;
     }
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)