Exempt status bubble windows from status bar darkening

chrome/chrome_tests.gypi

 # Copyright (c) 2012 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 2972 matching lines @@
         'browser/tab_contents/view_source_browsertest.cc',
         'browser/tab_restore_browsertest.cc',
         'browser/task_manager/task_manager_browsertest.cc',
         'browser/task_manager/task_manager_browsertest_util.cc',
         'browser/task_manager/task_manager_browsertest_util.h',
         'browser/task_manager/task_manager_notification_browsertest.cc',
         'browser/translate/translate_manager_browsertest.cc',
         'browser/ui/ash/caps_lock_handler_browsertest.cc',
         'browser/ui/ash/launcher/chrome_launcher_controller_browsertest.cc',
         'browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc',
+        'browser/ui/ash/shelf_browsertest.cc',
         'browser/ui/ash/volume_controller_browsertest_chromeos.cc',
         'browser/ui/browser_browsertest.cc',
         'browser/ui/browser_close_browsertest.cc',
         'browser/ui/browser_navigator_browsertest.cc',
         'browser/ui/browser_navigator_browsertest.h',
         'browser/ui/browser_navigator_browsertest_chromeos.cc',
         'browser/ui/cocoa/content_settings/content_setting_bubble_cocoa_unittest.mm',
         'browser/ui/cocoa/view_id_util_browsertest.mm',
         'browser/ui/cocoa/applescript/browsercrapplication+applescript_test.mm',
         'browser/ui/cocoa/applescript/window_applescript_test.mm',
@@ skipping 1757 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }