Oilpan: Build fix after r192665

Source/modules/webaudio/AudioBasicProcessorNode.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 32 matching lines @@
     // The subclass must create m_processor.
 }
 
 AudioBasicProcessorNode::~AudioBasicProcessorNode()
 {
     ASSERT(!isInitialized());
 }
 
 DEFINE_TRACE(AudioBasicProcessorNode)
 {
-    visitor->trace(m_processor);
     AudioNode::trace(visitor);
 }
 
 void AudioBasicProcessorNode::dispose()
 {
     uninitialize();
     AudioNode::dispose();
 }
 
 void AudioBasicProcessorNode::initialize()
@@ skipping 88 matching lines @@
 }
 
 double AudioBasicProcessorNode::latencyTime() const
 {
     return m_processor->latencyTime();
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)