base/prefs/pref_observer.h

   1 // Copyright (c) 2012 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 BASE_PREFS_PREF_OBSERVER_H_
   6 #define BASE_PREFS_PREF_OBSERVER_H_
   7
   8 #include <string>
   9
  10 class PrefServiceBase;
  11
  12 // TODO(joi): Switch to base::Callback and remove this.
  13 class PrefObserver {
  14  public:
  15   virtual void OnPreferenceChanged(PrefServiceBase* service,
  16                                    const std::string& pref_name) = 0;
  17 };
  18
  19 #endif  // BASE_PREFS_PREF_OBSERVER_H_