Avoid leaking objects between isolated worlds via attribute event listeners

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 355ed97a91f1372eefa8b811b069280f4ebad88e..1cca6c66b6769829e9491d426dabc356ba2b7d12 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -701,8 +701,8 @@ public:
     DOMWindow* defaultView() const { return domWindow(); } 
 
     // Helper functions for forwarding DOMWindow event related tasks to the DOMWindow if it exists.
-    void setWindowAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>);
-    EventListener* getWindowAttributeEventListener(const AtomicString& eventType);
+    void setWindowAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, DOMWrapperWorld* = 0);
+    EventListener* getWindowAttributeEventListener(const AtomicString& eventType, DOMWrapperWorld*);
     void dispatchWindowEvent(PassRefPtr<Event>, PassRefPtr<EventTarget> = 0);
 
     PassRefPtr<Event> createEvent(const String& eventType, ExceptionCode&);