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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_PREFS_PREF_OBSERVER_H_ | 5 #ifndef BASE_PREFS_PREF_OBSERVER_H_ |
6 #define BASE_PREFS_PREF_OBSERVER_H_ | 6 #define BASE_PREFS_PREF_OBSERVER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 class PrefService; | 10 class PrefService; |
11 | 11 |
12 // Used internally to the Prefs subsystem to pass preference change | 12 // Used internally to the Prefs subsystem to pass preference change |
13 // notifications between PrefService, PrefNotifierImpl and | 13 // notifications between PrefService, PrefNotifierImpl and |
14 // PrefChangeRegistrar. | 14 // PrefChangeRegistrar. |
15 class PrefObserver { | 15 class PrefObserver { |
16 public: | 16 public: |
17 virtual void OnPreferenceChanged(PrefService* service, | 17 virtual void OnPreferenceChanged(PrefService* service, |
18 const std::string& pref_name) = 0; | 18 const std::string& pref_name) = 0; |
19 }; | 19 }; |
20 | 20 |
21 #endif // BASE_PREFS_PREF_OBSERVER_H_ | 21 #endif // BASE_PREFS_PREF_OBSERVER_H_ |
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