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

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 3163 matching lines @@
         'browser/ui/views/accelerator_table_linux.cc',
         'browser/ui/views/accelerator_table_linux.h',
         'browser/ui/views/accessibility_event_router_views.cc',
         'browser/ui/views/accessibility_event_router_views.h',
         'browser/ui/views/accessible_pane_view.cc',
         'browser/ui/views/accessible_pane_view.h',
         'browser/ui/views/app_menu_button_win.cc',
         'browser/ui/views/app_menu_button_win.h',
         'browser/ui/views/appcache_info_view.cc',
         'browser/ui/views/appcache_info_view.h',
-        'browser/ui/views/aura/aura_init.cc',
-        'browser/ui/views/aura/aura_init.h',
         'browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc',
         'browser/ui/views/autocomplete/autocomplete_popup_contents_view.h',
         'browser/ui/views/autocomplete/autocomplete_result_view.cc',
         'browser/ui/views/autocomplete/autocomplete_result_view.h',
         'browser/ui/views/autocomplete/autocomplete_result_view_model.h',
         'browser/ui/views/autocomplete/touch_autocomplete_popup_contents_view.cc',
         'browser/ui/views/autocomplete/touch_autocomplete_popup_contents_view.h',
         'browser/ui/views/avatar_menu_bubble_view.cc',
         'browser/ui/views/avatar_menu_bubble_view.h',
         'browser/ui/views/avatar_menu_button.cc',
@@ skipping 1887 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }