CSSValue Immediates: Replace CSSPrimitiveValue 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 e3cb394e2959d9ce5f63215fd7eaecb803618db5..5a7614927bc396fab7a5d3a66312a3f1180e2b58 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 %}
@@ -142,7 +142,7 @@ namespace blink {
     if (!value.isPrimitiveValue())
         return;
 
-    CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(value);
+    const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
     if (primitiveValue.getValueID() == {{auto_identity}})
         state.style()->{{auto_setter}}();
     else
@@ -355,11 +355,11 @@ static bool borderImageLengthMatchesAllSides(const BorderImageLengthBox& borderI
             continue;
 
         Pair* pair = toCSSPrimitiveValue(currValue).getPairValue();
-        if (!pair || !pair->first() || !pair->second())
+        if (!pair)
             continue;
 
-        AtomicString identifier(toCSSPrimitiveValue(*pair->first()).getStringValue());
-        int value = toCSSPrimitiveValue(*pair->second()).getIntValue();
+        AtomicString identifier(pair->first().getStringValue());
+        int value = pair->second().getIntValue();
         CounterDirectives& directives = map.add(identifier, CounterDirectives()).storedValue->value;
         {% if action == 'Reset' %}
         directives.setResetValue(value);
@@ -513,22 +513,23 @@ static bool borderImageLengthMatchesAllSides(const BorderImageLengthBox& borderI
 {{declare_value_function(property_id)}}
 {
     String url;
-    if (value.isValueList()) {
-        CSSValueList& list = toCSSValueList(value);
+    NullableCSSValue valueToUse = value;
+    if (valueToUse->isValueList()) {
+        CSSValueList& list = toCSSValueList(*valueToUse);
         ASSERT(list.length() > 1);
 
         if (!list.item(0).isPrimitiveValue())
             return;
 
-        CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(list.item(0));
+        const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(list.item(0));
         if (!primitiveValue.isURI())
             return;
 
         url = primitiveValue.getStringValue();
-        value = list.item(1);
+        valueToUse = list.item(1);
     }
-    if (value.isPrimitiveValue()) {
-        CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(value);
+    if (valueToUse->isPrimitiveValue()) {
+        const 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,