Tried to move AudioSummingJuction to oilpan

Source/modules/webaudio/AudioSummingJunction.cpp

 /*
  * Copyright (C) 2012, 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 26 matching lines @@
 namespace WebCore {
 
 AudioSummingJunction::AudioSummingJunction(AudioContext* context)
     : m_context(context)
     , m_renderingStateNeedUpdating(false)
 {
 }
 
 AudioSummingJunction::~AudioSummingJunction()
 {
+#if !ENABLE(OILPAN)
     if (m_renderingStateNeedUpdating && m_context.get())
         m_context->removeMarkedSummingJunction(this);
+#endif
 }
 
 void AudioSummingJunction::changedOutputs()
 {
     ASSERT(context()->isGraphOwner());
     if (!m_renderingStateNeedUpdating && canUpdateState()) {
         context()->markSummingJunctionDirty(this);
         m_renderingStateNeedUpdating = true;
     }
 }
@@ skipping 11 matching lines @@
             m_renderingOutputs[j] = output;
             output->updateRenderingState();
         }
 
         didUpdate();
 
         m_renderingStateNeedUpdating = false;
     }
 }
 
+void AudioSummingJunction::trace(Visitor* visitor)
+{
+    visitor->trace(m_context);
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)