DOMDataStore should be cleared when shutting down worker threads

Source/bindings/v8/V8AbstractEventListener.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 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 26 matching lines @@
 #include "bindings/v8/V8EventListenerList.h"
 #include "bindings/v8/V8HiddenValue.h"
 #include "core/events/BeforeUnloadEvent.h"
 #include "core/events/Event.h"
 #include "core/events/ThreadLocalEventNames.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/workers/WorkerGlobalScope.h"
 
 namespace WebCore {
 
-V8AbstractEventListener::V8AbstractEventListener(bool isAttribute, PassRefPtr<DOMWrapperWorld> world, v8::Isolate* isolate)
+V8AbstractEventListener::V8AbstractEventListener(bool isAttribute, DOMWrapperWorld* world, v8::Isolate* isolate)
     : EventListener(JSEventListenerType)
     , m_isAttribute(isAttribute)
     , m_world(world)
     , m_isolate(isolate)
 {
     if (isMainThread())
         InspectorCounters::incrementCounter(InspectorCounters::JSEventListenerCounter);
 }
 
 V8AbstractEventListener::~V8AbstractEventListener()
@@ skipping 124 matching lines @@
 {
     return m_isolate->InContext() && m_world == DOMWrapperWorld::current(m_isolate);
 }
 
 void V8AbstractEventListener::setWeakCallback(const v8::WeakCallbackData<v8::Object, V8AbstractEventListener> &data)
 {
     data.GetParameter()->m_listener.clear();
 }
 
 } // namespace WebCore