Throw TypeError when addEventListener or removeEventListener are called without enough arguments

Source/core/events/EventTarget.h

Index: Source/core/events/EventTarget.h
diff --git a/Source/core/events/EventTarget.h b/Source/core/events/EventTarget.h
index 75fc4d20f138609f87464dc3e7f870af27098287..e561734c04b4aed178dfef38bcbd23ed5c8096a3 100644
--- a/Source/core/events/EventTarget.h
+++ b/Source/core/events/EventTarget.h
@@ -86,14 +86,9 @@ public:
     virtual DOMWindow* toDOMWindow();
     virtual MessagePort* toMessagePort();
 
-    // FIXME: first 2 args to addEventListener and removeEventListener should
-    // be required (per spec), but throwing TypeError breaks legacy content.
-    // http://crbug.com/353484
-    bool addEventListener() { return false; }
-    bool addEventListener(const AtomicString& eventType) { return false; }
+    // FIXME: default values should be specified in IDL, not C++
+    // http://crbug.com/258153
     virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture = false);
-    bool removeEventListener() { return false; }
-    bool removeEventListener(const AtomicString& eventType) { return false; }
     virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture = false);
     virtual void removeAllEventListeners();
     virtual bool dispatchEvent(PassRefPtrWillBeRawPtr<Event>);