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Side by Side Diff: components/user_prefs/tracked/tracked_preference.h

Issue 1227973003: Componentize //chrome/browser/prefs/tracked. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebased Created 5 years, 4 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 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 CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_ 5 #ifndef COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_H_
6 #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_ 6 #define COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_H_
7 7
8 class PrefHashStoreTransaction; 8 class PrefHashStoreTransaction;
9 9
10 namespace base { 10 namespace base {
11 class DictionaryValue; 11 class DictionaryValue;
12 class Value; 12 class Value;
13 } 13 }
14 14
15 // A TrackedPreference tracks changes to an individual preference, reporting and 15 // A TrackedPreference tracks changes to an individual preference, reporting and
16 // reacting to them according to preference-specific and browser-wide policies. 16 // reacting to them according to preference-specific and browser-wide policies.
17 class TrackedPreference { 17 class TrackedPreference {
18 public: 18 public:
19 virtual ~TrackedPreference() {} 19 virtual ~TrackedPreference() {}
20 20
21 // Notifies the underlying TrackedPreference about its new |value| which 21 // Notifies the underlying TrackedPreference about its new |value| which
22 // can update hashes in the corresponding hash store via |transaction|. 22 // can update hashes in the corresponding hash store via |transaction|.
23 virtual void OnNewValue(const base::Value* value, 23 virtual void OnNewValue(const base::Value* value,
24 PrefHashStoreTransaction* transaction) const = 0; 24 PrefHashStoreTransaction* transaction) const = 0;
25 25
26 // Verifies that the value of this TrackedPreference in |pref_store_contents| 26 // Verifies that the value of this TrackedPreference in |pref_store_contents|
27 // is valid. Responds to verification failures according to 27 // is valid. Responds to verification failures according to
28 // preference-specific and browser-wide policy and reports results to via UMA. 28 // preference-specific and browser-wide policy and reports results to via UMA.
29 // May use |transaction| to check/modify hashes in the corresponding hash 29 // May use |transaction| to check/modify hashes in the corresponding hash
30 // store. 30 // store.
31 virtual bool EnforceAndReport( 31 virtual bool EnforceAndReport(
32 base::DictionaryValue* pref_store_contents, 32 base::DictionaryValue* pref_store_contents,
33 PrefHashStoreTransaction* transaction) const = 0; 33 PrefHashStoreTransaction* transaction) const = 0;
34 }; 34 };
35 35
36 #endif // CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_ 36 #endif // COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_H_
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