Update cached kiosk app crx from usb stick.

chrome/browser/chromeos/app_mode/app_session_lifetime.cc

 // 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.
 
 #include "chrome/browser/chromeos/app_mode/app_session_lifetime.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_update_service.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_mode_idle_app_name_notification.h"
 #include "chrome/browser/chromeos/login/demo_mode/demo_app_launcher.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "chrome/browser/ui/browser_window.h"
@@ skipping 110 matching lines @@
           user_manager::UserManager::Get()->GetActiveUser()->email()))
     return;
 
   // Set the app_id for the current instance of KioskAppUpdateService.
   KioskAppUpdateService* update_service =
       KioskAppUpdateServiceFactory::GetForProfile(profile);
   DCHECK(update_service);
   if (update_service)
     update_service->set_app_id(app_id);
 
+  // Start to monitor external update from usb stick.
+  KioskAppManager::Get()->MonitorKioskExternalUpdate();
+
   // If the device is not enterprise managed, set prefs to reboot after update
   // and create a user security message which shows the user the application
   // name and author after some idle timeout.
   policy::BrowserPolicyConnectorChromeOS* connector =
       g_browser_process->platform_part()->browser_policy_connector_chromeos();
   if (!connector->IsEnterpriseManaged()) {
     PrefService* local_state = g_browser_process->local_state();
     local_state->SetBoolean(prefs::kRebootAfterUpdate, true);
     KioskModeIdleAppNameNotification::Initialize();
   }
 }
 
 }  // namespace chromeos