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1 // Copyright 2017 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_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_OBSERVER_H_ | |
6 #define CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_OBSERVER_H_ | |
7 | |
8 #include "base/optional.h" | |
9 | |
10 struct OneGoogleBarData; | |
11 | |
12 // Observer for OneGoogleBarService. Gets notified when the OneGoogleBarData | |
13 // changes. | |
14 class OneGoogleBarServiceObserver { | |
15 public: | |
16 virtual void OnOneGoogleBarDataChanged( | |
17 const base::Optional<OneGoogleBarData>& data) = 0; | |
sfiera
2017/04/13 15:18:31
Since the service provides an accessor, I would be
Marc Treib
2017/04/13 15:44:02
Hm. I do like the idea of "one way to get the valu
sfiera
2017/04/13 15:58:33
Passing nothing would be a lot less convenient, si
Marc Treib
2017/04/13 16:45:15
Eeh, in my experience most observers need to keep
| |
18 }; | |
19 | |
20 #endif // CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_OBSERVER_ H_ | |
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