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 372965200370b2f2637e90a120c1d2f62e867f80..68c7ca4e444bcbc9ce67c7081787073b4a3d832d 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -702,8 +702,8 @@ 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* isolatedWorld = 0);
+    EventListener* getWindowAttributeEventListener(const AtomicString& eventType, DOMWrapperWorld* isolatedWorld);
     void dispatchWindowEvent(PassRefPtr<Event>, PassRefPtr<EventTarget> = 0);
 
     PassRefPtr<Event> createEvent(const String& eventType, ExceptionCode&);