Handlify JSObject::AddFastPropertyUsingMap method.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 5d004297e0b62c7851605f35766983a9e7421ae1..41a513c36b643ac7442a455337b359d99a2974b3 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2761,18 +2761,12 @@ class JSObject: public JSReceiver {
 
   // Add a property to a fast-case object using a map transition to
   // new_map.
-  static Handle<Object> AddFastPropertyUsingMap(Handle<JSObject> object,
-                                                Handle<Map> new_map,
-                                                Handle<Name> name,
-                                                Handle<Object> value,
-                                                int field_index,
-                                                Representation representation);
-  MUST_USE_RESULT MaybeObject* AddFastPropertyUsingMap(
-      Map* new_map,
-      Name* name,
-      Object* value,
-      int field_index,
-      Representation representation);
+  static void AddFastPropertyUsingMap(Handle<JSObject> object,
+                                      Handle<Map> new_map,
+                                      Handle<Name> name,
+                                      Handle<Object> value,
+                                      int field_index,
+                                      Representation representation);
 
   // Add a property to a slow-case object.
   static void AddSlowProperty(Handle<JSObject> object,