Add ARC++ kiosk menu items and ability to start kiosk session.

ash/common/system/tray/system_tray.cc

 // 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.
 
 #include "ash/common/system/tray/system_tray.h"
 
 #include <algorithm>
 #include <map>
 #include <vector>
 
@@ skipping 520 matching lines @@
   return l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_ACCESSIBLE_DESCRIPTION,
                                     time, battery);
 }
 
 void SystemTray::ShowItems(const std::vector<SystemTrayItem*>& items,
                            bool detailed,
                            bool can_activate,
                            BubbleCreationType creation_type,
                            bool persistent) {
   // No system tray bubbles in kiosk mode.
-  if (WmShell::Get()->system_tray_delegate()->GetUserLoginStatus() ==
-      LoginStatus::KIOSK_APP) {
+  SystemTrayDelegate* system_tray_delegate =
+      WmShell::Get()->system_tray_delegate();
+  if (system_tray_delegate->GetUserLoginStatus() == LoginStatus::KIOSK_APP ||
+      system_tray_delegate->GetUserLoginStatus() ==
+          LoginStatus::ARC_KIOSK_APP) {
     return;
   }
 
   // Destroy any existing bubble and create a new one.
   SystemTrayBubble::BubbleType bubble_type =
       detailed ? SystemTrayBubble::BUBBLE_TYPE_DETAILED
                : SystemTrayBubble::BUBBLE_TYPE_DEFAULT;
 
   // Destroy the notification bubble here so that it doesn't get rebuilt
   // while we add items to the main bubble_ (e.g. in HideNotificationView).
@@ skipping 352 matching lines @@
           .work_area()
           .height();
   if (work_area_height > 0) {
     UMA_HISTOGRAM_CUSTOM_COUNTS(
         "Ash.SystemMenu.PercentageOfWorkAreaHeightCoveredByMenu",
         100 * bubble_view->height() / work_area_height, 1, 300, 100);
   }
 }
 
 }  // namespace ash