Profile shouldn't own Session/TabRestore services.

chrome/browser/sessions/tab_restore_service_factory.h

+// Copyright (c) 2011 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_TAB_RESTORE_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_FACTORY_H_
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile_keyed_service_factory.h"
+
+class TabRestoreService;
+class Profile;
+
+// Singleton that owns all TabRestoreServices and associates them with
+// Profiles. Listens for the Profile's destruction notification and cleans up
+// the associated TabRestoreService.
+class TabRestoreServiceFactory : public ProfileKeyedServiceFactory {
+ public:
+  static TabRestoreService* GetForProfile(Profile* profile);
+
+  static void ResetForProfile(Profile* profile);
+
+  static TabRestoreServiceFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<TabRestoreServiceFactory>;
+
+  TabRestoreServiceFactory();
+  virtual ~TabRestoreServiceFactory();
+
+  // ProfileKeyedServiceFactory:
+  virtual ProfileKeyedService* BuildServiceInstanceFor(Profile* profile) const;
+};
+
+#endif  // CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_FACTORY_H_