Implements the dialog view for logout button tray in public sessions.

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',
   },
   'includes': [
@@ skipping 291 matching lines @@
         'system/drive/tray_drive.h',
         'system/ime/ime_observer.h',
         'system/ime/tray_ime.cc',
         'system/ime/tray_ime.h',
         'system/keyboard_brightness/keyboard_brightness_control_delegate.h',
         'system/locale/locale_notification_controller.cc',
         'system/locale/locale_notification_controller.h',
         'system/logout_button/logout_button_observer.h',
         'system/logout_button/logout_button_tray.cc',
         'system/logout_button/logout_button_tray.h',
+        'system/logout_button/logout_confirmation_dialog_view.cc',
+        'system/logout_button/logout_confirmation_dialog_view.h',
         'system/monitor/tray_monitor.cc',
         'system/monitor/tray_monitor.h',
         'system/session_length_limit/session_length_limit_observer.h',
         'system/session_length_limit/tray_session_length_limit.cc',
         'system/session_length_limit/tray_session_length_limit.h',
         'system/status_area_widget.cc',
         'system/status_area_widget.h',
         'system/status_area_widget_delegate.cc',
         'system/status_area_widget_delegate.h',
         'system/system_notifier.cc',
@@ skipping 628 matching lines @@
             },
           },
           'dependencies': [
             '../sandbox/sandbox.gyp:sandbox',
           ],
         }],
       ],
     },
   ],
 }