Update cached kiosk app crx from usb stick.

chrome/browser/chromeos/app_mode/kiosk_app_update_service.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/kiosk_app_update_service.h"
 
 #include "base/logging.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_process_platform_part_chromeos.h"
@@ skipping 23 matching lines @@
     system::AutomaticRebootManager* automatic_reboot_manager)
     : profile_(profile),
       automatic_reboot_manager_(automatic_reboot_manager) {
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   if (service)
     service->AddUpdateObserver(this);
 
   if (automatic_reboot_manager_)
     automatic_reboot_manager_->AddObserver(this);
+
+  if (KioskAppManager::Get()) {
+    KioskAppManager::Get()->AddObserver(this);
+  }

[xiyuan, 2014/08/23 18:11:57]

nit: drop {}

[jennyz, 2014/08/27 00:58:41]

Done.

 }
 
 KioskAppUpdateService::~KioskAppUpdateService() {
 }
 
 void KioskAppUpdateService::StartAppUpdateRestartTimer() {
   if (restart_timer_.IsRunning())
     return;
 
   // Setup timer to force restart once the wait period expires.
   restart_timer_.Start(
       FROM_HERE, base::TimeDelta::FromMilliseconds(kForceRestartWaitTimeMs),
       this, &KioskAppUpdateService::ForceAppUpdateRestart);
 }
 
 void KioskAppUpdateService::ForceAppUpdateRestart() {
   // Force a chrome restart (not a logout or reboot) by closing all browsers.
   LOG(WARNING) << "Force closing all browsers to update kiosk app.";
   chrome::CloseAllBrowsersAndQuit();
 }
 
 void KioskAppUpdateService::Shutdown() {
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   if (service)
     service->RemoveUpdateObserver(this);
+  if (KioskAppManager::Get())
+    KioskAppManager::Get()->RemoveObserver(this);
 }
 
 void KioskAppUpdateService::OnAppUpdateAvailable(
     const extensions::Extension* extension) {
   if (extension->id() != app_id_)
     return;
 
   // Clears cached app data so that it will be reloaded if update from app
   // does not finish in this run.
   KioskAppManager::Get()->ClearAppData(app_id_);
@@ skipping 27 matching lines @@
 
   extensions::RuntimeEventRouter::DispatchOnRestartRequiredEvent(
       profile_, app_id_, restart_reason);
 }
 
 void KioskAppUpdateService::WillDestroyAutomaticRebootManager() {
   automatic_reboot_manager_->RemoveObserver(this);
   automatic_reboot_manager_ = NULL;
 }
 
+void KioskAppUpdateService::OnKioskAppCacheUpdated(const std::string& app_id) {
+  if (app_id != app_id_)
+    return;
+
+  extensions::RuntimeEventRouter::DispatchOnRestartRequiredEvent(
+      profile_,
+      app_id_,
+      extensions::core_api::runtime::OnRestartRequired::REASON_APP_UPDATE);
+
+  StartAppUpdateRestartTimer();
+}
+
 KioskAppUpdateServiceFactory::KioskAppUpdateServiceFactory()
     : BrowserContextKeyedServiceFactory(
         "KioskAppUpdateService",
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(
       extensions::ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
 }
 
 KioskAppUpdateServiceFactory::~KioskAppUpdateServiceFactory() {
 }
@@ skipping 16 matching lines @@
 }
 
 KeyedService* KioskAppUpdateServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   return new KioskAppUpdateService(
       Profile::FromBrowserContext(context),
       g_browser_process->platform_part()->automatic_reboot_manager());
 }
 
 }  // namespace chromeos