Add *CSS* prefix to FontValue and FontFeatureValue

Source/core/css/CSSFontValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * 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.
  */
 
-#ifndef FontValue_h
-#define FontValue_h
+#ifndef CSSFontValue_h
+#define CSSFontValue_h
 
 #include "core/css/CSSValue.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class CSSPrimitiveValue;
 class CSSValueList;
 
-class FontValue : public CSSValue {
+class CSSFontValue : public CSSValue {
 public:
-    static PassRefPtr<FontValue> create()
+    static PassRefPtr<CSSFontValue> create()
     {
-        return adoptRef(new FontValue);
+        return adoptRef(new CSSFontValue);
     }
 
     String customCssText() const;
 
-    bool equals(const FontValue&) const;
+    bool equals(const CSSFontValue&) const;
 
     RefPtr<CSSPrimitiveValue> style;
     RefPtr<CSSPrimitiveValue> variant;
     RefPtr<CSSPrimitiveValue> weight;
     RefPtr<CSSPrimitiveValue> size;
     RefPtr<CSSPrimitiveValue> lineHeight;
     RefPtr<CSSValueList> family;
 
 private:
-    FontValue()
+    CSSFontValue()
         : CSSValue(FontClass)
     {
     }
 };
 
+DEFINE_CSS_VALUE_TYPE_CASTS(FontValue);
+
 } // namespace
 
 #endif