Use EventHandler type instead of EventListener for event handler attributes

Source/core/loader/appcache/DOMApplicationCache.idl

 /*
  * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 23 matching lines @@
     const unsigned short DOWNLOADING = 3;
     const unsigned short UPDATEREADY = 4;
     const unsigned short OBSOLETE = 5;
     readonly attribute unsigned short status;
 
     [RaisesException] void update();
     [RaisesException] void swapCache();
     void abort();
 
     // events
-    attribute EventListener onchecking;
-    attribute EventListener onerror;
-    attribute EventListener onnoupdate;
-    attribute EventListener ondownloading;
-    attribute EventListener onprogress;
-    attribute EventListener onupdateready;
-    attribute EventListener oncached;
-    attribute EventListener onobsolete;
+    attribute EventHandler onchecking;
+    attribute EventHandler onerror;
+    attribute EventHandler onnoupdate;
+    attribute EventHandler ondownloading;
+    attribute EventHandler onprogress;
+    attribute EventHandler onupdateready;
+    attribute EventHandler oncached;
+    attribute EventHandler onobsolete;
 };