New test cases for kiosk app crx file cache.

chrome/browser/chromeos/app_mode/kiosk_app_manager.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_manager.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 518 matching lines @@
   dict_update->SetInteger(kKeyAutoLoginState, state);
   prefs->CommitPendingWrite();
 }
 
 void KioskAppManager::GetKioskAppCrxCacheDir(base::FilePath* cache_dir) {
   base::FilePath user_data_dir;
   CHECK(PathService::Get(chrome::DIR_USER_DATA, &user_data_dir));
   *cache_dir = user_data_dir.AppendASCII(kCrxCacheDir);
 }
 
+bool KioskAppManager::GetKioskAppExtension(const std::string& app_id,
+                                           base::FilePath* file_path,
+                                           std::string* version) {
+  return external_cache_->GetExtension(app_id, file_path, version);
+}
+
 }  // namespace chromeos