1// Copyright (c) 2010 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_OBSERVER_H_
6#define CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_OBSERVER_H_
7
8class TabRestoreService;
9
10// Observer is notified when the set of entries managed by TabRestoreService
11// changes in some way.
12class TabRestoreServiceObserver {
13 public:
14  // Sent when the set of entries changes in some way.
15  virtual void TabRestoreServiceChanged(TabRestoreService* service) = 0;
16
17  // Sent to all remaining Observers when TabRestoreService's
18  // destructor is run.
19  virtual void TabRestoreServiceDestroyed(TabRestoreService* service) = 0;
20
21  // Sent when TabRestoreService finishes loading.
22  virtual void TabRestoreServiceLoaded(TabRestoreService* service) {}
23
24 protected:
25  virtual ~TabRestoreServiceObserver() {}
26};
27
28#endif  // CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_OBSERVER_H_
29