Make sure to use CSSValueID and CSSPropertyID rather than integers.

Source/core/css/CSSValuePool.cpp

Index: Source/core/css/CSSValuePool.cpp
diff --git a/Source/core/css/CSSValuePool.cpp b/Source/core/css/CSSValuePool.cpp
index 4c5d8ef4b26e334dcaef8521d48fe477808c4546..8b2219dcb0bc9f5f1f926551984347bf685f6135 100644
--- a/Source/core/css/CSSValuePool.cpp
+++ b/Source/core/css/CSSValuePool.cpp
@@ -48,9 +48,9 @@ CSSValuePool::CSSValuePool()
 {
 }
 
-PassRefPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(int ident)
+PassRefPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(CSSValueID ident)
 {
-    if (ident <= 0 || ident >= numCSSValueKeywords)
+    if (ident <= 0)
         return CSSPrimitiveValue::createIdentifier(ident);
 
     if (!m_identifierValueCache[ident])
@@ -58,6 +58,11 @@ PassRefPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(int ident)
     return m_identifierValueCache[ident];
 }
 
+PassRefPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(CSSPropertyID ident)
+{
+    return CSSPrimitiveValue::createIdentifier(ident);
+}
+
 PassRefPtr<CSSPrimitiveValue> CSSValuePool::createColorValue(unsigned rgbValue)
 {
     // These are the empty and deleted values of the hash table.