Make order of addition the primary order of descriptor arrays.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 57acb3776a112b6e0d082d82651dd3faca3a5607..0a526a08deb93f4da9a8afa2979b560961c2121b 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -2221,8 +2221,9 @@ void Genesis::TransferNamedProperties(Handle<JSObject> from,
           // Add to dictionary.
           Handle<String> key = Handle<String>(descs->GetKey(i));
           Handle<Object> callbacks(descs->GetCallbacksObject(i));
-          PropertyDetails d =
-              PropertyDetails(details.attributes(), CALLBACKS, details.index());
+          PropertyDetails d = PropertyDetails(details.attributes(),
+                                              CALLBACKS,
+                                              details.descriptor_index());
           JSObject::SetNormalizedProperty(to, key, callbacks, d);
           break;
         }