Move tracked prefs into services/preferences/tracked.

components/user_prefs/tracked/tracked_split_preference.h

-// 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 COMPONENTS_USER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
-#define COMPONENTS_USER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
-
-#include <stddef.h>
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "components/user_prefs/tracked/pref_hash_filter.h"
-#include "components/user_prefs/tracked/tracked_preference.h"
-#include "components/user_prefs/tracked/tracked_preference_helper.h"
-
-namespace prefs {
-namespace mojom {
-class TrackedPreferenceValidationDelegate;
-}
-}
-
-// A TrackedSplitPreference must be tracking a dictionary pref. Each top-level
-// entry in its dictionary is tracked and enforced independently. An optional
-// delegate is notified of the status of the preference during enforcement.
-// Note: preferences using this strategy must be kept in sync with
-// TrackedSplitPreferences in histograms.xml.
-class TrackedSplitPreference : public TrackedPreference {
- public:
-  // Constructs a TrackedSplitPreference. |pref_path| must be a dictionary pref.
-  TrackedSplitPreference(
-      const std::string& pref_path,
-      size_t reporting_id,
-      size_t reporting_ids_count,
-      PrefHashFilter::EnforcementLevel enforcement_level,
-      PrefHashFilter::ValueType value_type,
-      prefs::mojom::TrackedPreferenceValidationDelegate* delegate);
-
-  // TrackedPreference implementation.
-  TrackedPreferenceType GetType() const override;
-  void OnNewValue(const base::Value* value,
-                  PrefHashStoreTransaction* transaction) const override;
-  bool EnforceAndReport(
-      base::DictionaryValue* pref_store_contents,
-      PrefHashStoreTransaction* transaction,
-      PrefHashStoreTransaction* external_validation_transaction) const override;
-
- private:
-  const std::string pref_path_;
-  const TrackedPreferenceHelper helper_;
-  prefs::mojom::TrackedPreferenceValidationDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrackedSplitPreference);
-};
-
-#endif  // COMPONENTS_USER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_