Change Object.defineProperty to accept undefined as getters and setters and t...

src/objects.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1350 matching lines @@
   InterceptorInfo* GetNamedInterceptor();
   InterceptorInfo* GetIndexedInterceptor();
 
   inline PropertyAttributes GetPropertyAttribute(String* name);
   PropertyAttributes GetPropertyAttributeWithReceiver(JSObject* receiver,
                                                       String* name);
   PropertyAttributes GetLocalPropertyAttribute(String* name);
 
   MUST_USE_RESULT MaybeObject* DefineAccessor(String* name,
                                               bool is_getter,
-                                              JSFunction* fun,
+                                              Object* fun,
                                               PropertyAttributes attributes);
   Object* LookupAccessor(String* name, bool is_getter);
 
   MUST_USE_RESULT MaybeObject* DefineAccessor(AccessorInfo* info);
 
   // Used from Object::GetProperty().
   MaybeObject* GetPropertyWithFailedAccessCheck(
       Object* receiver,
       LookupResult* result,
       String* name,
@@ skipping 4737 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_