Web Audio: Change the argument of AudioNode::addOutput().

Source/modules/webaudio/GainNode.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 22 matching lines @@
 namespace blink {
 
 GainNode::GainNode(AudioContext* context, float sampleRate)
     : AudioNode(NodeTypeGain, context, sampleRate)
     , m_lastGain(1.0)
     , m_sampleAccurateGainValues(AudioNode::ProcessingSizeInFrames) // FIXME: can probably share temp buffer in context
 {
     m_gain = AudioParam::create(context, 1.0);
 
     addInput();
-    addOutput(AudioNodeOutput::create(this, 1));
+    addOutput(1);
 
     initialize();
 }
 
 void GainNode::process(size_t framesToProcess)
 {
     // FIXME: for some cases there is a nice optimization to avoid processing here, and let the gain change
     // happen in the summing junction input of the AudioNode we're connected to.
     // Then we can avoid all of the following:
 
@@ skipping 53 matching lines @@
 
 DEFINE_TRACE(GainNode)
 {
     visitor->trace(m_gain);
     AudioNode::trace(visitor);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)