// Copyright 2014 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_ #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_ class PrefHashStoreTransaction; namespace base { class DictionaryValue; class Value; } // A TrackedPreference tracks changes to an individual preference, reporting and // reacting to them according to preference-specific and browser-wide policies. class TrackedPreference { public: virtual ~TrackedPreference() {} // Notifies the underlying TrackedPreference about its new |value| which // can update hashes in the corresponding hash store via |transaction|. virtual void OnNewValue(const base::Value* value, PrefHashStoreTransaction* transaction) const = 0; // Verifies that the value of this TrackedPreference in |pref_store_contents| // is valid. Responds to verification failures according to // preference-specific and browser-wide policy and reports results to via UMA. // May use |transaction| to check/modify hashes in the corresponding hash // store. virtual bool EnforceAndReport( base::DictionaryValue* pref_store_contents, PrefHashStoreTransaction* transaction) const = 0; }; #endif // CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_H_