Move modules-dependent eventtarget 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
new file mode 100644
index 0000000000000000000000000000000000000000..244432b95a590dd29683e1cd37fc7b4903084e34
--- /dev/null
+++ b/Source/modules/InitModules.h
@@ -0,0 +1,19 @@
+// 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 InitModules_h
+#define InitModules_h
+
+#include "core/Init.h"
+
+namespace WebCore {
+
+class ModulesInitializer : public CoreInitializer {
+public:
+    virtual void initEventTargetNames() OVERRIDE;
+};
+
+} // namespace WebCore
+
+#endif // InitModules_h