Move modules-dependent Event code out of core.

Source/modules/InitModules.h

Index: Source/modules/InitModules.h
diff --git a/Source/modules/InitModules.h b/Source/modules/InitModules.h
index 6c649870ef096b793c1afa47c6bec5cc8f380fc3..83afcc115579c6ed463f86a5e76afd9f5b199925 100644
--- a/Source/modules/InitModules.h
+++ b/Source/modules/InitModules.h
@@ -6,15 +6,21 @@
 #define InitModules_h
 
 #include "core/Init.h"
+#include "platform/heap/Handle.h"
 
 namespace WebCore {
 
+class Event;
+class ExceptionState;
+
 class ModulesInitializer : public CoreInitializer {
 public:
     virtual void initEventNames() OVERRIDE;
     virtual void initEventTargetNames() OVERRIDE;
 };
 
+PassRefPtrWillBeRawPtr<Event> createEventModules(const String& eventType, ExceptionState&);
+
 } // namespace WebCore
 
 #endif // InitModules_h