CSSValue Immediates: Make CSSPrimitiveValue a container

Source/core/css/CSSCalculationValue.h

Index: Source/core/css/CSSCalculationValue.h
diff --git a/Source/core/css/CSSCalculationValue.h b/Source/core/css/CSSCalculationValue.h
index 36e79da4b45cfa9dd66060db53014f20b0614845..bec063e06f3b4543538e8de7d254ad781f4a1b69 100644
--- a/Source/core/css/CSSCalculationValue.h
+++ b/Source/core/css/CSSCalculationValue.h
@@ -66,7 +66,7 @@ enum CalculationCategory {
     CalcOther
 };
 
-class CSSCalcExpressionNode : public RefCountedWillBeGarbageCollected<CSSCalcExpressionNode> {
+class CSSCalcExpressionNode : public RefCountedWillBeGarbageCollectedFinalized<CSSCalcExpressionNode> {
     DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(CSSCalcExpressionNode);
 public:
     enum Type {
@@ -106,7 +106,7 @@ public:
     static PassRefPtrWillBeRawPtr<CSSCalcValue> create(CSSParserValueList*, ValueRange);
     static PassRefPtrWillBeRawPtr<CSSCalcValue> create(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, ValueRange = ValueRangeAll);
 
-    static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtrWillBeRawPtr<CSSPrimitiveValue>, bool isInteger = false);
+    static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(CSSPrimitiveValue, bool isInteger = false);
     static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, CalcOperator);
     static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(double pixels, double percent);