Remove explicit bounds check from CSSValueList::item

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 339c7ca6a2a8f8960fbf3d26761b8b343c676d23..5672e52a1fb427b10f968bed4e57ea09fbb7b019 100644
--- a/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
+++ b/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
@@ -359,7 +359,7 @@ static bool lengthTypeAndValueMatch(const BorderImageLengthBox& borderImageLengt
 
     int length = list ? list->length() : 0;
     for (int i = 0; i < length; ++i) {
-        CSSValue* currValue = list->itemWithoutBoundsCheck(i);
+        CSSValue* currValue = list->item(i);
         if (!currValue->isPrimitiveValue())
             continue;
 
@@ -431,7 +431,7 @@ static bool lengthTypeAndValueMatch(const BorderImageLengthBox& borderImageLengt
                 currChild = new FillLayer({{fill_layer_type}});
                 prevChild->setNext(currChild);
             }
-            state.styleMap().{{map_fill}}({{property_id}}, currChild, valueList->itemWithoutBoundsCheck(i));
+            state.styleMap().{{map_fill}}({{property_id}}, currChild, valueList->item(i));
             prevChild = currChild;
             currChild = currChild->next();
         }
@@ -532,7 +532,7 @@ static bool lengthTypeAndValueMatch(const BorderImageLengthBox& borderImageLengt
         CSSBoxType cssBox = BoxMissing;
         CSSValueList* valueList = toCSSValueList(value);
         for (unsigned i = 0; i < valueList->length(); ++i) {
-            CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(valueList->itemWithoutBoundsCheck(i));
+            CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(valueList->item(i));
             if (primitiveValue->isShape())
                 shape = basicShapeForValue(state, primitiveValue->getShapeValue());
             else if (primitiveValue->getValueID() == CSSValueContentBox