Remove map-copying for global objects. This was an old (broken) requirement that has been fixed for…

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index e53df91d0ba67f99ba9bb1f422a4b68ff9fed72d..dfe7fce5ec39eae45531ca20f44f1efe4831b76b 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -7272,12 +7272,7 @@ Handle<Map> Map::TransitionToAccessorProperty(Handle<Map> map,
   Isolate* isolate = name->GetIsolate();
 
   // Dictionary maps can always have additional data properties.
-  if (map->is_dictionary_map()) {
-    // For global objects, property cells are inlined. We need to change the
-    // map.
-    if (map->IsGlobalObjectMap()) return Copy(map, "GlobalAccessor");
-    return map;
-  }
+  if (map->is_dictionary_map()) return map;
 
   // Migrate to the newest map before transitioning to the new property.
   map = Update(map);