Make sure to use CSSValueID and CSSPropertyID rather than integers.

Source/core/css/CSSParserValues.h

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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 CSSParserValues_h
 #define CSSParserValues_h
 
+#include "CSSValueKeywords.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSSelector.h"
 #include "core/css/CSSValueList.h"
-#include <wtf/text/AtomicString.h>
-#include <wtf/text/WTFString.h>
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class CSSValue;
 class QualifiedName;
 
 struct CSSParserString {
     void init(const LChar* characters, unsigned length)
     {
         m_data.characters8 = characters;
@@ skipping 80 matching lines @@
         const LChar* characters8;
         const UChar* characters16;
     } m_data;
     unsigned m_length;
     bool m_is8Bit;
 };
 
 struct CSSParserFunction;
 
 struct CSSParserValue {
-    int id;
+    CSSValueID id;
     bool isInt;
     union {
         double fValue;
         int iValue;
         CSSParserString string;
         CSSParserFunction* function;
     };
     enum {
         Operator = 0x100000,
         Function = 0x100001,
@@ skipping 92 matching lines @@
     CSSParserSelector* m_functionArgumentSelector;
 };
 
 inline bool CSSParserSelector::hasShadowPseudo() const
 {
     return m_selector->relation() == CSSSelector::ShadowPseudo;
 }
 
 inline void CSSParserValue::setFromNumber(double value, int unit)
 {
-    id = 0;
+    id = CSSValueInvalid;
     isInt = false;
     fValue = value;
     this->unit = unit;
 }
 
 }
 
 #endif