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

Source/core/css/CSSGridTemplateAreasValue.h

Index: Source/core/css/CSSGridTemplateAreasValue.h
diff --git a/Source/core/css/CSSGridTemplateAreasValue.h b/Source/core/css/CSSGridTemplateAreasValue.h
index 8b801b662609dd2313f98abe475eb69b22aca8bd..fd37e2304a69d8024c3c62717f511109c6b52693 100644
--- a/Source/core/css/CSSGridTemplateAreasValue.h
+++ b/Source/core/css/CSSGridTemplateAreasValue.h
@@ -37,7 +37,7 @@
 
 namespace blink {
 
-class CSSGridTemplateAreasValue : public CSSValue {
+class CSSGridTemplateAreasValue : public CSSValueObject {
 public:
     static PassRefPtrWillBeRawPtr<CSSGridTemplateAreasValue> create(const NamedGridAreaMap& gridAreaMap, size_t rowCount, size_t columnCount)
     {
@@ -53,7 +53,7 @@ public:
 
     bool equals(const CSSGridTemplateAreasValue&) const;
 
-    DEFINE_INLINE_TRACE_AFTER_DISPATCH() { CSSValue::traceAfterDispatch(visitor); }
+    DEFINE_INLINE_TRACE_AFTER_DISPATCH() { CSSValueObject::traceAfterDispatch(visitor); }
 
 private:
     CSSGridTemplateAreasValue(const NamedGridAreaMap&, size_t rowCount, size_t columnCount);