Split out String, URI and CustomIdent from CSSPrimitiveValue

Source/core/css/parser/CSSPropertyParser.cpp

Index: Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/Source/core/css/parser/CSSPropertyParser.cpp b/Source/core/css/parser/CSSPropertyParser.cpp
index 2e6c483da002877dc8980b5b0be85f790357171b..d81bbbd3abc430b2db9fcb52392c937dc8603275 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -77,18 +77,18 @@ static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> consumeIdent(CSSParserTokenRang
     return cssValuePool().createIdentifierValue(range.consumeIncludingWhitespace().id());
 }
 
-static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> consumeCustomIdent(CSSParserTokenRange& range)
+static PassRefPtrWillBeRawPtr<CSSCustomIdentValue> consumeCustomIdent(CSSParserTokenRange& range)
 {
     if (range.peek().type() != IdentToken)
         return nullptr;
-    return cssValuePool().createValue(range.consumeIncludingWhitespace().value(), CSSPrimitiveValue::UnitType::CustomIdentifier);
+    return CSSCustomIdentValue::create(range.consumeIncludingWhitespace().value());
 }
 
-static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> consumeString(CSSParserTokenRange& range)
+static PassRefPtrWillBeRawPtr<CSSStringValue> consumeString(CSSParserTokenRange& range)
 {
     if (range.peek().type() != StringToken)
         return nullptr;
-    return cssValuePool().createValue(range.consumeIncludingWhitespace().value(), CSSPrimitiveValue::UnitType::String);
+    return CSSStringValue::create(range.consumeIncludingWhitespace().value());
 }
 
 // Methods for consuming non-shorthand properties starts here.
@@ -142,7 +142,7 @@ static PassRefPtrWillBeRawPtr<CSSValue> consumeWillChange(CSSParserTokenRange& r
     return values.release();
 }
 
-static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> consumePage(CSSParserTokenRange& range)
+static PassRefPtrWillBeRawPtr<CSSValue> consumePage(CSSParserTokenRange& range)
 {
     if (range.peek().id() == CSSValueAuto)
         return consumeIdent(range);