Tried to move AudioSummingJuction to oilpan

Source/modules/webaudio/ConvolverNode.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 34 matching lines @@
 // Very large FFTs will have worse phase errors. Given these constraints 32768 is a good compromise.
 const size_t MaxFFTSize = 32768;
 
 namespace WebCore {
 
 ConvolverNode::ConvolverNode(AudioContext* context, float sampleRate)
     : AudioNode(context, sampleRate)
     , m_normalize(true)
 {
     ScriptWrappable::init(this);
-    addInput(adoptPtr(new AudioNodeInput(this)));
+    addInput(adoptPtrWillBeNoop(new AudioNodeInput(this)));
     addOutput(adoptPtr(new AudioNodeOutput(this, 2)));
 
     // Node-specific default mixing rules.
     m_channelCount = 2;
     m_channelCountMode = ClampedMax;
     m_channelInterpretation = AudioBus::Speakers;
 
     setNodeType(NodeTypeConvolver);
     initialize();
 }
@@ skipping 106 matching lines @@
 double ConvolverNode::latencyTime() const
 {
     MutexTryLocker tryLocker(m_processLock);
     if (tryLocker.locked())
         return m_reverb ? m_reverb->latencyFrames() / static_cast<double>(sampleRate()) : 0;
     // Since we don't want to block the Audio Device thread, we return a large value
     // instead of trying to acquire the lock.
     return std::numeric_limits<double>::infinity();
 }
 
+void ConvolverNode::trace(Visitor* visitor)
+{
+    visitor->trace(m_buffer);
+    AudioNode::trace(visitor);
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)