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

Source/core/css/CSSImageGeneratorValue.h

Index: Source/core/css/CSSImageGeneratorValue.h
diff --git a/Source/core/css/CSSImageGeneratorValue.h b/Source/core/css/CSSImageGeneratorValue.h
index 96907047d260c3fde3402618ac775f18d9b47d81..40321cb0cd971c097c99d51e2fe5632326128af0 100644
--- a/Source/core/css/CSSImageGeneratorValue.h
+++ b/Source/core/css/CSSImageGeneratorValue.h
@@ -51,7 +51,7 @@ struct SizeAndCount {
 
 typedef HashMap<const LayoutObject*, SizeAndCount> LayoutObjectSizeCountMap;
 
-class CORE_EXPORT CSSImageGeneratorValue : public CSSValue {
+class CORE_EXPORT CSSImageGeneratorValue : public CSSValueObject {
 public:
     ~CSSImageGeneratorValue();
 
@@ -67,7 +67,7 @@ public:
 
     void loadSubimages(Document*);
 
-    DEFINE_INLINE_TRACE_AFTER_DISPATCH() { CSSValue::traceAfterDispatch(visitor); }
+    DEFINE_INLINE_TRACE_AFTER_DISPATCH() { CSSValueObject::traceAfterDispatch(visitor); }
 
 protected:
     explicit CSSImageGeneratorValue(ClassType);