blob: 37ce00d479b7d734b521f2fa632113e3f1a73312 [file] [log] [blame]
// 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.
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 {
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;