CL for perf tryjob on win

Source/core/css/CSSReflectValue.h

Index: Source/core/css/CSSReflectValue.h
diff --git a/Source/core/css/CSSReflectValue.h b/Source/core/css/CSSReflectValue.h
index 18569543adc4084aa81e53a4dbac803c347fd59a..26c088c93a872c114829fc968912fc1672e4fcfc 100644
--- a/Source/core/css/CSSReflectValue.h
+++ b/Source/core/css/CSSReflectValue.h
@@ -34,17 +34,17 @@ namespace blink {
 
 class CSSPrimitiveValue;
 
-class CSSReflectValue : public CSSValue {
+class CSSReflectValue : public CSSValueObject {
 public:
     static PassRefPtrWillBeRawPtr<CSSReflectValue> create(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> direction,
-        PassRefPtrWillBeRawPtr<CSSPrimitiveValue> offset, PassRefPtrWillBeRawPtr<CSSValue> mask)
+        PassRefPtrWillBeRawPtr<CSSPrimitiveValue> offset, NullableCSSValue mask)
     {
         return adoptRefWillBeNoop(new CSSReflectValue(direction, offset, mask));
     }
 
     CSSPrimitiveValue* direction() const { return m_direction.get(); }
     CSSPrimitiveValue* offset() const { return m_offset.get(); }
-    CSSValue* mask() const { return m_mask.get(); }
+    NullableCSSValue mask() const { return m_mask; }
 
     String customCSSText() const;
 
@@ -53,8 +53,8 @@ public:
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
-    CSSReflectValue(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> direction, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> offset, PassRefPtrWillBeRawPtr<CSSValue> mask)
-        : CSSValue(ReflectClass)
+    CSSReflectValue(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> direction, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> offset, NullableCSSValue mask)
+        : CSSValueObject(ReflectClass)
         , m_direction(direction)
         , m_offset(offset)
         , m_mask(mask)
@@ -63,7 +63,7 @@ private:
 
     RefPtrWillBeMember<CSSPrimitiveValue> m_direction;
     RefPtrWillBeMember<CSSPrimitiveValue> m_offset;
-    RefPtrWillBeMember<CSSValue> m_mask;
+    NullableCSSValue m_mask;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSReflectValue, isReflectValue());