Revert of Add task location information to WorkerThread

Source/core/workers/WorkerGlobalScope.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 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
@@ skipping 177 matching lines @@
 
 WorkerNavigator* WorkerGlobalScope::navigator() const
 {
     if (!m_navigator)
         m_navigator = WorkerNavigator::create(m_userAgent);
     return m_navigator.get();
 }
 
 void WorkerGlobalScope::postTask(const WebTraceLocation& location, PassOwnPtr<ExecutionContextTask> task)
 {
-    thread()->postTask(location, task);
+    thread()->postTask(task);
 }
 
 // FIXME: Called twice, from WorkerThreadShutdownFinishTask and WorkerGlobalScope::dispose.
 void WorkerGlobalScope::clearInspector()
 {
     if (!m_workerInspectorController)
         return;
     thread()->setWorkerInspectorController(nullptr);
     m_workerInspectorController->dispose();
     m_workerInspectorController.clear();
@@ skipping 163 matching lines @@
     visitor->trace(m_timers);
     visitor->trace(m_messageStorage);
     visitor->trace(m_pendingMessages);
     HeapSupplementable<WorkerGlobalScope>::trace(visitor);
 #endif
     ExecutionContext::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace blink