Move modules-dependent Event code out of core.

Source/modules/EventModulesFactory.h

Index: Source/modules/EventModulesFactory.h
diff --git a/Source/modules/EventModulesFactory.h b/Source/modules/EventModulesFactory.h
new file mode 100644
index 0000000000000000000000000000000000000000..b826e9e857af801ae0bbce2bcc6633f878bccd8d
--- /dev/null
+++ b/Source/modules/EventModulesFactory.h
@@ -0,0 +1,23 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef EventModulesFactory_h
+#define EventModulesFactory_h
+
+#include "platform/heap/Handle.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/text/AtomicString.h"
+
+namespace WebCore {
+
+class Event;
+
+class EventModulesFactory {
+public:
+    static PassRefPtrWillBeRawPtr<Event> create(const String& eventType);
+};
+
+}
+
+#endif