kiosk: Do update check during launch.

chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc b/chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc
index f96eab155d3a98bac57e6e24b6e7d7480a0c87a7..9b2763158b89616cda3c5aaf548a64cd0b212f44 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_update_service.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_process_platform_part_chromeos.h"
+#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/system/automatic_reboot_manager.h"
 #include "chrome/browser/extensions/api/runtime/runtime_api.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ -71,6 +72,12 @@ void KioskAppUpdateService::OnAppUpdateAvailable(
   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_);
+  KioskAppManager::Get()->UpdateAppDataFromProfile(
+      app_id_, profile_, extension);
+
   extensions::RuntimeEventRouter::DispatchOnRestartRequiredEvent(
       profile_,
       app_id_,