Move application restart and relaunch code out of ExtensionService.

apps/app_load_service.h

+// 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.
+
+#ifndef APPS_APP_LOAD_SERVICE_H_
+#define APPS_APP_LOAD_SERVICE_H_
+
+#include <map>
+#include <string>
+
+#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+class Profile;
+
+namespace apps {
+
+// Monitors apps being reloaded and performs app specific actions (like launch
+// or restart) on them. Also provides an interface to schedule these actions.
+class AppLoadService : public BrowserContextKeyedService,
+                       public content::NotificationObserver {
+ public:
+  explicit AppLoadService(Profile* profile);
+  virtual ~AppLoadService();
+
+  // Reload the application with the given id and then send it the OnRestarted
+  // event.
+  void RestartApplication(const std::string& extension_id);
+
+  // Schedule a launch to happen for the extension with id |extension_id|
+  // when it loads next. This does not cause the extension to be reloaded.
+  void ScheduleLaunchOnLoad(const std::string& extension_id);
+
+  static AppLoadService* Get(Profile* profile);
+
+ private:
+  // content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // Map of extension id to reload action. Absence from the map implies
+  // no action.
+  std::map<std::string, int> reload_actions_;
+  content::NotificationRegistrar registrar_;
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppLoadService);
+};
+
+}  // namespace apps
+
+#endif  // APPS_APP_LOAD_SERVICE_H_