Add WebNotificationTray to the status area

ash/ash.gyp

 # 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': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
   },
 
@@ skipping 173 matching lines @@
         'system/tray_accessibility.h',
         'system/tray_caps_lock.cc',
         'system/tray_caps_lock.h',
         'system/tray_update.cc',
         'system/tray_update.h',
         'system/user/login_status.h',
         'system/user/tray_user.cc',
         'system/user/tray_user.h',
         'system/user/update_observer.h',
         'system/user/user_observer.h',
+        'system/web_notification/web_notification_tray.cc',
+        'system/web_notification/web_notification_tray.h',
         'tooltips/tooltip_controller.cc',
         'tooltips/tooltip_controller.h',
         'touch/touch_observer_hud.cc',
         'touch/touch_observer_hud.h',
         'ui_controls_ash.cc',
         'volume_control_delegate.h',
         'wm/app_list_controller.cc',
         'wm/app_list_controller.h',
         'wm/activation_controller.cc',
         'wm/activation_controller.h',
@@ skipping 170 matching lines @@
         'focus_cycler_unittest.cc',
         'launcher/launcher_context_menu_unittest.cc',
         'launcher/launcher_model_unittest.cc',
         'launcher/launcher_navigator_unittest.cc',
         'launcher/launcher_unittest.cc',
         'launcher/launcher_view_unittest.cc',
         'monitor/multi_monitor_manager_unittest.cc',
         'screensaver/screensaver_view_unittest.cc',
         'shell_unittest.cc',
         'system/tray/system_tray_unittest.cc',
+        'system/web_notification/web_notification_tray_unittest.cc',
         'test/ash_test_base.cc',
         'test/ash_test_base.h',
         'test/ash_unittests.cc',
         'test/capture_tracking_view.cc',
         'test/capture_tracking_view.h',
         'test/launcher_view_test_api.cc',
         'test/launcher_view_test_api.h',
         'test/test_activation_delegate.cc',
         'test/test_activation_delegate.h',
         'test/test_launcher_delegate.cc',
@@ skipping 152 matching lines @@
             'shell/cocoa/app-Info.plist',
           ],
           'xcode_settings': {
             'INFOPLIST_FILE': 'shell/cocoa/app-Info.plist',
           },
         }],
       ],
     },
   ],
 }