Use method registration approach for creating events on core and modules.

Source/modules/EventModulesFactory.h

Index: Source/modules/EventModulesFactory.h
diff --git a/Source/modules/EventModulesFactory.h b/Source/modules/EventModulesFactory.h
index b826e9e857af801ae0bbce2bcc6633f878bccd8d..61e7b2ad9f8a257bab44ed21d853f0a353574dd3 100644
--- a/Source/modules/EventModulesFactory.h
+++ b/Source/modules/EventModulesFactory.h
@@ -5,6 +5,7 @@
 #ifndef EventModulesFactory_h
 #define EventModulesFactory_h
 
+#include "core/events/EventFactory.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/AtomicString.h"
@@ -13,9 +14,9 @@ namespace WebCore {
 
 class Event;
 
-class EventModulesFactory {
+class EventModulesFactory : public EventFactoryBase {
 public:
-    static PassRefPtrWillBeRawPtr<Event> create(const String& eventType);
+    virtual PassRefPtrWillBeRawPtr<Event> create(const String& eventType) OVERRIDE;
 };
 
 }