Revert of Add task location information to ExecutionContext

Source/modules/webaudio/AudioContext.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 759 matching lines @@
 
     if (newState == m_contextState) {
         // ASSERTs above failed; just return.
         return;
     }
 
     m_contextState = newState;
 
     // Notify context that state changed
     if (executionContext())
-        executionContext()->postTask(FROM_HERE, createSameThreadTask(&AudioContext::notifyStateChange, this));
+        executionContext()->postTask(createSameThreadTask(&AudioContext::notifyStateChange, this));
 }
 
 void AudioContext::notifyStateChange()
 {
     dispatchEvent(Event::create(EventTypeNames::statechange));
 }
 
 ScriptPromise AudioContext::suspendContext(ScriptState* scriptState)
 {
     ASSERT(isMainThread());
@@ skipping 599 matching lines @@
 }
 
 void AudioContext::didFinishMarking(ThreadState&)
 {
     unlock();
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)