top_sites_observer.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2014 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 COMPONENTS_HISTORY_CORE_BROWSER_TOP_SITES_OBSERVER_H_
6#define COMPONENTS_HISTORY_CORE_BROWSER_TOP_SITES_OBSERVER_H_
7
8namespace history {
9class TopSites;
10
11// Interface for observing notifications from TopSites.
12class TopSitesObserver {
13 public:
14  // Is called when TopSites finishes loading.
15  virtual void TopSitesLoaded(history::TopSites* top_sites) = 0;
16
17  // Is called when either one of the most visited urls
18  // changed, or one of the images changes.
19  virtual void TopSitesChanged(history::TopSites* top_sites) = 0;
20};
21
22}  // namespace history
23
24#endif  // COMPONENTS_HISTORY_CORE_BROWSER_TOP_SITES_OBSERVER_H_
25