change the way windows are parented when their parent is set to NULL.

chrome/browser/ui/views/aura/aura_init.cc

Index: chrome/browser/ui/views/aura/aura_init.cc
===================================================================
--- chrome/browser/ui/views/aura/aura_init.cc	(revision 104542)
+++ chrome/browser/ui/views/aura/aura_init.cc	(working copy)
@@ -1,15 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/ui/views/aura/aura_init.h"
-
-#include "ui/aura_shell/shell_factory.h"
-
-namespace browser {
-
-void InitAuraDesktop() {
-  aura_shell::InitDesktopWindow();
-}
-
-}  // namespace browser