Add a native data property that replaces itself with a real data property

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 9249d8b3f56cf1cedcb7266cbcecbc364e43dd7a..c10056f56b3ae6acc2273d19afe260e872095565 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -11217,6 +11217,9 @@ class AccessorInfo: public Struct {
   inline bool is_special_data_property();
   inline void set_is_special_data_property(bool value);
 
+  inline bool replace_on_access();
+  inline void set_replace_on_access(bool value);
+
   inline bool is_sloppy();
   inline void set_is_sloppy(bool value);
 
@@ -11258,7 +11261,8 @@ class AccessorInfo: public Struct {
   static const int kAllCanWriteBit = 1;
   static const int kSpecialDataProperty = 2;
   static const int kIsSloppy = 3;
-  class AttributesField : public BitField<PropertyAttributes, 4, 3> {};
+  static const int kReplaceOnAccess = 4;
+  class AttributesField : public BitField<PropertyAttributes, 5, 3> {};
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AccessorInfo);
 };