Make sure to use CSSValueID and CSSPropertyID rather than integers.

Source/core/css/StylePropertySet.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. 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.
  *
@@ skipping 257 matching lines @@
 }
 
 void MutableStylePropertySet::setPrefixingVariantProperty(const CSSProperty& property)
 {
     CSSPropertyID prefixingVariant = prefixingVariantForPropertyId(property.id());
     CSSProperty* toReplace = findCSSPropertyWithID(prefixingVariant);
     if (toReplace)
         *toReplace = CSSProperty(prefixingVariant, property.value(), property.isImportant(), property.shorthandID(), property.metadata().m_implicit);
 }
 
-bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, int identifier, bool important)
+bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, CSSValueID identifier, bool important)
 {
     setProperty(CSSProperty(propertyID, cssValuePool().createIdentifierValue(identifier), important));
     return true;
+}
+
+bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, CSSPropertyID identifier, bool important)
+{
+    setProperty(CSSProperty(propertyID, cssValuePool().createIdentifierValue(identifier), important));
+    return true;
 }
 
 void MutableStylePropertySet::parseDeclaration(const String& styleDeclaration, StyleSheetContents* contextStyleSheet)
 {
     m_propertyVector.clear();
 
     CSSParserContext context(cssParserMode());
     if (contextStyleSheet) {
         context = contextStyleSheet->parserContext();
         context.mode = cssParserMode();
@@ skipping 298 matching lines @@
     result.appendLiteral(": ");
     result.append(propertyValue()->cssText());
     if (isImportant())
         result.appendLiteral(" !important");
     result.append(';');
     return result.toString();
 }
 
 
 } // namespace WebCore