CSSValue Immediates: Change CSSValue to an object instead of a pointer

Source/core/css/CSSBorderImage.cpp

Index: Source/core/css/CSSBorderImage.cpp
diff --git a/Source/core/css/CSSBorderImage.cpp b/Source/core/css/CSSBorderImage.cpp
index 4a569ed7b0048e593162167256bfbb3951ca9844..daecf653bdbb76f045e474efe126c1b247d29f2b 100644
--- a/Source/core/css/CSSBorderImage.cpp
+++ b/Source/core/css/CSSBorderImage.cpp
@@ -22,29 +22,30 @@
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<CSSValueList> createBorderImageValue(PassRefPtrWillBeRawPtr<CSSValue> image, PassRefPtrWillBeRawPtr<CSSValue> imageSlice,
-    PassRefPtrWillBeRawPtr<CSSValue> borderSlice, PassRefPtrWillBeRawPtr<CSSValue> outset, PassRefPtrWillBeRawPtr<CSSValue> repeat)
+PassRefPtrWillBeRawPtr<CSSValueList> createBorderImageValue(NullableCSSValue image, NullableCSSValue imageSlice,
+    NullableCSSValue borderSlice, NullableCSSValue outset, NullableCSSValue repeat)
 {
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     if (image)
-        list->append(image);
+        list->append(*image);
 
     if (borderSlice || outset) {
         RefPtrWillBeRawPtr<CSSValueList> listSlash = CSSValueList::createSlashSeparated();
         if (imageSlice)
-            listSlash->append(imageSlice);
+            listSlash->append(*imageSlice);
 
         if (borderSlice)
-            listSlash->append(borderSlice);
+            listSlash->append(*borderSlice);
 
         if (outset)
-            listSlash->append(outset);
+            listSlash->append(*outset);
 
         list->append(listSlash);
-    } else if (imageSlice)
-        list->append(imageSlice);
+    } else if (imageSlice) {
+        list->append(*imageSlice);
+    }
     if (repeat)
-        list->append(repeat);
+        list->append(*repeat);
     return list.release();
 }