CSSValue Immediates: Replace CSSValue usage with const references

Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl

Index: Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
diff --git a/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl b/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
index c25ed31b0e276f1850137f0f6c38d5962f17f3ba..f81146183a93a6c193ff1d61f0148eb08d9aa21d 100644
--- a/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
+++ b/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
@@ -23,7 +23,7 @@ void StyleBuilderFunctions::applyInitial{{property_id}}(StyleResolverState& stat
 void StyleBuilderFunctions::applyInherit{{property_id}}(StyleResolverState& state)
 {%- endmacro %}
 {% macro declare_value_function(property_id) %}
-void StyleBuilderFunctions::applyValue{{property_id}}(StyleResolverState& state, CSSValue value)
+void StyleBuilderFunctions::applyValue{{property_id}}(StyleResolverState& state, const CSSValue& value)
 {%- endmacro %}
 {% macro set_value(property) %}
 {% if property.svg %}
@@ -513,8 +513,9 @@ static bool borderImageLengthMatchesAllSides(const BorderImageLengthBox& borderI
 {{declare_value_function(property_id)}}
 {
     String url;
-    if (value.isValueList()) {
-        CSSValueList& list = toCSSValueList(value);
+    CSSValue valueToUse = value;
+    if (valueToUse.isValueList()) {
+        CSSValueList& list = toCSSValueList(valueToUse);
         ASSERT(list.length() > 1);
 
         if (!list.item(0).isPrimitiveValue())
@@ -525,10 +526,10 @@ static bool borderImageLengthMatchesAllSides(const BorderImageLengthBox& borderI
             return;
 
         url = primitiveValue.getStringValue();
-        value = list.item(1);
+        valueToUse = list.item(1);
     }
-    if (value.isPrimitiveValue()) {
-        CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
+    if (valueToUse.isPrimitiveValue()) {
+        CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(valueToUse);
         Color color;
         SVGPaintType paintType = SVG_PAINTTYPE_RGBCOLOR;
         if (primitiveValue.getValueID() == CSSValueNone) {
@@ -540,7 +541,7 @@ static bool borderImageLengthMatchesAllSides(const BorderImageLengthBox& borderI
             color = state.style()->color();
             paintType = url.isEmpty() ? SVG_PAINTTYPE_CURRENTCOLOR : SVG_PAINTTYPE_URI_CURRENTCOLOR;
         } else {
-            color = StyleBuilderConverter::convertColor(state, value);
+            color = StyleBuilderConverter::convertColor(state, valueToUse);
             paintType = url.isEmpty() ? SVG_PAINTTYPE_RGBCOLOR : SVG_PAINTTYPE_URI_RGBCOLOR;
         }
         {{set_value(property)}}(paintType, color, url,