Revert of Add task location information to ExecutionContext

Source/modules/webaudio/OfflineAudioDestinationNode.cpp

 /*
  * Copyright (C) 2011, 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 133 matching lines @@
             float* destination = m_renderTarget->getChannelData(channelIndex)->data();
             memcpy(destination + n, source, sizeof(float) * framesAvailableToCopy);
         }
 
         n += framesAvailableToCopy;
         framesToProcess -= framesAvailableToCopy;
     }
 
     // Our work is done. Let the AudioContext know.
     if (context()->executionContext())
-        context()->executionContext()->postTask(FROM_HERE, createCrossThreadTask(&OfflineAudioDestinationNode::notifyComplete, this));
+        context()->executionContext()->postTask(createCrossThreadTask(&OfflineAudioDestinationNode::notifyComplete, this));
 }
 
 void OfflineAudioDestinationNode::notifyComplete()
 {
     context()->fireCompletionEvent();
 }
 
 DEFINE_TRACE(OfflineAudioDestinationNode)
 {
     visitor->trace(m_renderTarget);
     AudioDestinationNode::trace(visitor);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)