Add counters for addEventListener/removeEventListener optional arguments

Source/core/events/EventTarget.cpp

Index: Source/core/events/EventTarget.cpp
diff --git a/Source/core/events/EventTarget.cpp b/Source/core/events/EventTarget.cpp
index 62d24a8b6fa8e5290482b8c42a9458b2098147b9..36857b1c455c6793901e4726c9d0823de60b71d1 100644
--- a/Source/core/events/EventTarget.cpp
+++ b/Source/core/events/EventTarget.cpp
@@ -88,6 +88,18 @@ inline LocalDOMWindow* EventTarget::executingWindow()
     return 0;
 }
 
+bool EventTarget::addEventListener()
+{
+    UseCounter::count(executionContext(), UseCounter::AddEventListenerNoArguments);
+    return false;
+}
+
+bool EventTarget::addEventListener(const AtomicString& eventType)
+{
+    UseCounter::count(executionContext(), UseCounter::AddEventListenerOneArgument);
+    return false;
+}
+
 bool EventTarget::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     // FIXME: listener null check should throw TypeError (and be done in
@@ -106,6 +118,18 @@ bool EventTarget::addEventListener(const AtomicString& eventType, PassRefPtr<Eve
     return ensureEventTargetData().eventListenerMap.add(eventType, listener, useCapture);
 }
 
+bool EventTarget::removeEventListener()
+{
+    UseCounter::count(executionContext(), UseCounter::RemoveEventListenerNoArguments);
+    return false;
+}
+
+bool EventTarget::removeEventListener(const AtomicString& eventType)
+{
+    UseCounter::count(executionContext(), UseCounter::RemoveEventListenerOneArgument);
+    return false;
+}
+
 bool EventTarget::removeEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     // FIXME: listener null check should throw TypeError (and be done in