CSSValue Immediates: Make CSSPrimitiveValue a container

Source/core/css/resolver/TransformBuilder.cpp

Index: Source/core/css/resolver/TransformBuilder.cpp
diff --git a/Source/core/css/resolver/TransformBuilder.cpp b/Source/core/css/resolver/TransformBuilder.cpp
index d6786476bf4f35c00aba8e6d0d8fe16feeae2ef2..df926fad3634784968b811ec56b8fad75f56e054 100644
--- a/Source/core/css/resolver/TransformBuilder.cpp
+++ b/Source/core/css/resolver/TransformBuilder.cpp
@@ -43,7 +43,7 @@
 
 namespace blink {
 
-static Length convertToFloatLength(CSSPrimitiveValue& primitiveValue, const CSSToLengthConversionData& conversionData)
+static Length convertToFloatLength(CSSPrimitiveValue primitiveValue, const CSSToLengthConversionData& conversionData)
 {
     return primitiveValue.convertToLength(conversionData);
 }
@@ -92,7 +92,7 @@ void TransformBuilder::createTransformOperations(CSSValue& inValue, const CSSToL
         CSSFunctionValue& transformValue = toCSSFunctionValue(value);
         TransformOperation::OperationType transformType = getTransformOperationType(transformValue.functionType());
 
-        CSSPrimitiveValue& firstValue = toCSSPrimitiveValue(transformValue.item(0));
+        CSSPrimitiveValue firstValue = toCSSPrimitiveValue(transformValue.item(0));
 
         switch (transformType) {
         case TransformOperation::Scale:
@@ -106,7 +106,7 @@ void TransformBuilder::createTransformOperations(CSSValue& inValue, const CSSToL
                 sx = firstValue.getDoubleValue();
                 if (transformType != TransformOperation::ScaleX) {
                     if (transformValue.length() > 1) {
-                        CSSPrimitiveValue& secondValue = toCSSPrimitiveValue(transformValue.item(1));
+                        CSSPrimitiveValue secondValue = toCSSPrimitiveValue(transformValue.item(1));
                         sy = secondValue.getDoubleValue();
                     } else {
                         sy = sx;
@@ -142,7 +142,7 @@ void TransformBuilder::createTransformOperations(CSSValue& inValue, const CSSToL
                 tx = convertToFloatLength(firstValue, conversionData);
                 if (transformType != TransformOperation::TranslateX) {
                     if (transformValue.length() > 1) {
-                        CSSPrimitiveValue& secondValue = toCSSPrimitiveValue(transformValue.item(1));
+                        CSSPrimitiveValue secondValue = toCSSPrimitiveValue(transformValue.item(1));
                         ty = convertToFloatLength(secondValue, conversionData);
                     }
                 }
@@ -178,9 +178,9 @@ void TransformBuilder::createTransformOperations(CSSValue& inValue, const CSSToL
             break;
         }
         case TransformOperation::Rotate3D: {
-            CSSPrimitiveValue& secondValue = toCSSPrimitiveValue(transformValue.item(1));
-            CSSPrimitiveValue& thirdValue = toCSSPrimitiveValue(transformValue.item(2));
-            CSSPrimitiveValue& fourthValue = toCSSPrimitiveValue(transformValue.item(3));
+            CSSPrimitiveValue secondValue = toCSSPrimitiveValue(transformValue.item(1));
+            CSSPrimitiveValue thirdValue = toCSSPrimitiveValue(transformValue.item(2));
+            CSSPrimitiveValue fourthValue = toCSSPrimitiveValue(transformValue.item(3));
             double x = firstValue.getDoubleValue();
             double y = secondValue.getDoubleValue();
             double z = thirdValue.getDoubleValue();
@@ -200,7 +200,7 @@ void TransformBuilder::createTransformOperations(CSSValue& inValue, const CSSToL
                 angleX = angle;
                 if (transformType == TransformOperation::Skew) {
                     if (transformValue.length() > 1) {
-                        CSSPrimitiveValue& secondValue = toCSSPrimitiveValue(transformValue.item(1));
+                        CSSPrimitiveValue secondValue = toCSSPrimitiveValue(transformValue.item(1));
                         angleY = secondValue.computeDegrees();
                     }
                 }