Re-home the global MessageCenter to support Ash+Win environments.

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1833 matching lines @@
             # build time dependency.
             '../v8/tools/gyp/v8.gyp:v8_shell#host',
             '../webkit/webkit.gyp:copy_npapi_test_plugin',
           ],
         }],
         ['enable_app_list==0', {
           'sources/': [
             ['exclude', '^browser/ui/app_list/'],
           ],
         }],
-        ['enable_message_center==0 or use_ash==1', {
+        ['enable_message_center==0', {
           'sources!': [
             'browser/notifications/message_center_notifications_browsertest.cc',
             'browser/ui/views/message_center/web_notification_tray_win_browsertest.cc',
           ],
         }],
       ],  # conditions
     },  # target browser_tests
     {
       # Executable that runs each perf browser test in a new process.
       'target_name': 'performance_browser_tests',
@@ skipping 1296 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/browser_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }