Move webaudio to oilpan

Source/modules/webaudio/PannerNode.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 531 matching lines @@
     m_cachedListener->setSpeedOfSound(listener()->speedOfSound());
 }
 
 void PannerNode::updateCachedSourceLocationInfo()
 {
     m_cachedPosition = m_position;
     m_cachedOrientation = m_orientation;
     m_cachedVelocity = m_velocity;
 }
 
+void PannerNode::trace(Visitor* visitor)
+{
+    visitor->trace(m_distanceGain);
+    visitor->trace(m_coneGain);
+    visitor->trace(m_cachedListener);
+    AudioNode::trace(visitor);
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)