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1 // Copyright (c) 2011 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_EXTENSIONS_SETTINGS_SETTINGS_OBSERVER_H_ | |
6 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_OBSERVER_H_ | |
7 | |
8 #include "base/observer_list_threadsafe.h" | |
9 #include "chrome/browser/extensions/settings/settings_namespace.h" | |
10 | |
11 namespace extensions { | |
12 | |
13 // Interface for classes that listen to changes to extension settings. | |
14 class SettingsObserver { | |
15 public: | |
16 // Called when a list of settings have changed for an extension. | |
17 virtual void OnSettingsChanged( | |
18 const std::string& extension_id, | |
19 settings_namespace::Namespace settings_namespace, | |
20 const std::string& changes_json) = 0; | |
21 | |
22 virtual ~SettingsObserver() {} | |
23 }; | |
24 | |
25 typedef ObserverListThreadSafe<SettingsObserver> | |
26 SettingsObserverList; | |
27 | |
28 } // namespace extensions | |
29 | |
30 #endif // CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_OBSERVER_H_ | |
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