Update cached kiosk app crx from usb stick.

chrome/browser/chromeos/app_mode/kiosk_app_manager.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_manager.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_manager.cc b/chrome/browser/chromeos/app_mode/kiosk_app_manager.cc
index e4e7b0e53247c742d6bb9c586895afe3d0e80042..2921d50576561ab9eacf1cb24f81b1bff23e4775 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_manager.cc
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_manager.cc
@@ -9,6 +9,7 @@
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
+#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_registry_simple.h"
@@ -20,6 +21,7 @@
 #include "chrome/browser/chromeos/app_mode/kiosk_app_data.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_external_loader.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager_observer.h"
+#include "chrome/browser/chromeos/app_mode/kiosk_external_updater.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_local_account.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
@@ -74,6 +76,7 @@ const char KioskAppManager::kKeyApps[] = "apps";
 const char KioskAppManager::kKeyAutoLoginState[] = "auto_login_state";
 const char KioskAppManager::kIconCacheDir[] = "kiosk/icon";
 const char KioskAppManager::kCrxCacheDir[] = "kiosk/crx";
+const char KioskAppManager::kCrxUnpackDir[] = "kiosk_unpack";
 
 // static
 static base::LazyInstance<KioskAppManager> instance = LAZY_INSTANCE_INITIALIZER;
@@ -370,6 +373,12 @@ bool KioskAppManager::HasCachedCrx(const std::string& app_id) const {
   return GetCachedCrx(app_id, &crx_path, &version);
 }
 
+bool KioskAppManager::GetCachedCrx(const std::string& app_id,
+                                   base::FilePath* file_path,
+                                   std::string* version) const {
+  return external_cache_->GetExtension(app_id, file_path, version);
+}
+
 void KioskAppManager::AddObserver(KioskAppManagerObserver* observer) {
   observers_.AddObserver(observer);
 }
@@ -407,6 +416,11 @@ void KioskAppManager::UpdateExternalCache() {
   UpdateAppData();
 }
 
+void KioskAppManager::OnKioskAppCacheUpdated(const std::string& app_id) {
+  FOR_EACH_OBSERVER(
+      KioskAppManagerObserver, observers_, OnKioskAppCacheUpdated(app_id));
+}
+
 KioskAppManager::KioskAppManager()
     : ownership_established_(false), external_loader_created_(false) {
   base::FilePath cache_dir;
@@ -431,10 +445,20 @@ KioskAppManager::KioskAppManager()
 
 KioskAppManager::~KioskAppManager() {}
 
+void KioskAppManager::MonitorKioskExternalUpdate() {
+  base::FilePath cache_dir;
+  GetCrxCacheDir(&cache_dir);
+  base::FilePath unpack_dir;
+  GetCrxUnpackDir(&unpack_dir);
+  usb_stick_updater_.reset(new KioskExternalUpdater(
+      GetBackgroundTaskRunner(), cache_dir, unpack_dir));
+}
+
 void KioskAppManager::CleanUp() {
   local_accounts_subscription_.reset();
   local_account_auto_login_id_subscription_.reset();
   apps_.clear();
+  usb_stick_updater_.reset();
   external_cache_.reset();
 }
 
@@ -586,10 +610,10 @@ void KioskAppManager::GetCrxCacheDir(base::FilePath* cache_dir) {
   *cache_dir = user_data_dir.AppendASCII(kCrxCacheDir);
 }
 
-bool KioskAppManager::GetCachedCrx(const std::string& app_id,
-                                   base::FilePath* file_path,
-                                   std::string* version) const {
-  return external_cache_->GetExtension(app_id, file_path, version);
+void KioskAppManager::GetCrxUnpackDir(base::FilePath* unpack_dir) {
+  base::FilePath temp_dir;
+  base::GetTempDir(&temp_dir);
+  *unpack_dir = temp_dir.AppendASCII(kCrxUnpackDir);
 }
 
 }  // namespace chromeos