Change this to _window in apply()

AppKit/CPWebView.j

@@ -962,7 +962,7 @@ CPWebViewAppKitScrollMaxPollCount                  = 3;
     {
         try
         {
-            return _window[methodName].apply(this, args);
+            return _window[methodName].apply(_window, args);
         }
         catch (e)
         {