Restart running apps when chrome restarts.

chrome/browser/sessions/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_SESSIONS_APP_RESTORE_SERVICE_H_
+#define CHROME_BROWSER_SESSIONS_APP_RESTORE_SERVICE_H_
+
+#include "chrome/browser/cancelable_request.h"
+#include "chrome/browser/sessions/base_session_service.h"
+#include "chrome/browser/sessions/session_command.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+#include <list>
+#include <vector>
+
+class Profile;
+
+namespace extensions {
+class ExtensionHost;
+}
+
+// Tracks what apps need to be restarted when the browser restarts.
+class AppRestoreService : public BaseSessionService,

[sky, 2012/08/28 16:56:12]

The list of apps is going to be smallish, I think stashing them in prefs will
make everything a lot simpler.

+                          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();
+
+  // Calculates which apps were running when the last session ended.
+  void CalculateAppsRunningLastSession(const std::vector<SessionCommand*>& data,
+                                       std::list<std::string>& apps);
+
+  // Dispatches the app.runtime.onRestarted event to the apps identified by the
+  // extension ids in |apps|.
+  void RestartApps(std::list<std::string>& apps);
+
+  // content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details);
+
+ private:
+  // Called when the commands for the last session have been retrieved from the
+  // backend.
+  void OnGotLastSessionCommands(Handle handle,
+      scoped_refptr<InternalGetCommandsRequest> request);
+
+  // Factory methods for SessionCommands that track running apps.
+  SessionCommand* CreateRunAppCommand(const std::string& extension_id);
+  SessionCommand* CreateStopAppCommand(const std::string& extension_id);
+
+  content::NotificationRegistrar registrar_;
+  CancelableRequestConsumer request_consumer_;
+};
+
+#endif  // CHROME_BROWSER_SESSIONS_APP_RESTORE_SERVICE_H_