Create top level apps component and move some apps code there.

chrome/browser/extensions/app_restore_service.h

-// Copyright (c) 2012 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.
-
-#ifndef CHROME_BROWSER_EXTENSIONS_APP_RESTORE_SERVICE_H_
-#define CHROME_BROWSER_EXTENSIONS_APP_RESTORE_SERVICE_H_
-
-#include "chrome/browser/profiles/profile_keyed_service.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-#include <string>
-
-class Profile;
-
-namespace extensions {
-
-class Extension;
-
-// Tracks what apps need to be restarted when the browser restarts.
-class AppRestoreService : public ProfileKeyedService,
-                          public content::NotificationObserver {
- public:
-  explicit AppRestoreService(Profile* profile);
-
-  // Restart apps that need to be restarted and clear the "running" preference
-  // from apps to prevent them being restarted in subsequent restarts.
-  void HandleStartup(bool should_restore_apps);
-
- private:
-  // content::NotificationObserver.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  void RecordAppStart(const std::string& extension_id);
-  void RecordAppStop(const std::string& extension_id);
-  void RestoreApp(const Extension* extension);
-
-  content::NotificationRegistrar registrar_;
-  Profile* profile_;
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_APP_RESTORE_SERVICE_H_