[CSS Regions] Add new regionOversetChange event

Source/core/rendering/RegionOversetState.h

Index: Source/core/rendering/RegionOversetState.h
diff --git a/Source/core/css/StyleSheet.cpp b/Source/core/rendering/RegionOversetState.h
similarity index 78%
copy from Source/core/css/StyleSheet.cpp
copy to Source/core/rendering/RegionOversetState.h
index 04fbf0e61523d106b4a27a83a38df13fb39452c9..e29e370a20af93c1acaabae72a9122ba129fdae4 100644
--- a/Source/core/css/StyleSheet.cpp
+++ b/Source/core/rendering/RegionOversetState.h
@@ -1,7 +1,4 @@
-/**
- * (C) 1999-2003 Lars Knoll (knoll@kde.org)
- * Copyright (C) 2004, 2006 Apple Computer, Inc.
- *
+/*
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ -16,14 +13,21 @@
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
+ *
  */
-#include "config.h"
-#include "core/css/StyleSheet.h"
+
+#ifndef RegionOversetState_h
+#define RegionOversetState_h
 
 namespace WebCore {
 
-StyleSheet::~StyleSheet()
-{
-}
+enum RegionOversetState {
+    RegionUndefined,
+    RegionEmpty,
+    RegionFit,
+    RegionOverset
+};
+
+} // namespace WebCore
 
-}
+#endif // RegionOversetState_h