Restart running apps when chrome restarts.

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 {
+
+// Tracks what apps need to be restarted when the browser restarts.
+class AppRestoreService : public ProfileKeyedService,
+                          public content::NotificationObserver {
+ public:
+  explicit AppRestoreService(Profile* profile);
+
+  // Dispatches the app.runtime.onRestarted event to apps that were running in
+  // the last session.
+  void RestoreApps();
+
+ 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 std::string& extension_id);
+
+  content::NotificationRegistrar registrar_;
+  Profile* profile_;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_APP_RESTORE_SERVICE_H_