Revert of Add task location information to ExecutionContext

Source/modules/notifications/Notification.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 142 matching lines @@
     m_state = NotificationStateShowing;
 }
 
 void Notification::close()
 {
     if (m_state != NotificationStateShowing)
         return;
 
     if (m_persistentId.isEmpty()) {
         // Fire the close event asynchronously.
-        executionContext()->postTask(FROM_HERE, createSameThreadTask(&Notification::dispatchCloseEvent, this));
+        executionContext()->postTask(createSameThreadTask(&Notification::dispatchCloseEvent, this));
 
         m_state = NotificationStateClosing;
         notificationManager()->close(this);
     } else {
         m_state = NotificationStateClosed;
         notificationManager()->closePersistent(m_persistentId);
     }
 }
 
 void Notification::dispatchShowEvent()
@@ skipping 91 matching lines @@
     return m_state == NotificationStateShowing || m_asyncRunner.isActive();
 }
 
 DEFINE_TRACE(Notification)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<Notification>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink