Revert of Pref service: add support for tracked prefs.

services/preferences/tracked/tracked_persistent_pref_store_factory.h

Index: services/preferences/tracked/tracked_persistent_pref_store_factory.h
diff --git a/services/preferences/tracked/tracked_persistent_pref_store_factory.h b/services/preferences/tracked/tracked_persistent_pref_store_factory.h
deleted file mode 100644
index fb426bab47db4e8453b68801ba6aa2b84dc6834e..0000000000000000000000000000000000000000
--- a/services/preferences/tracked/tracked_persistent_pref_store_factory.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2017 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 SERVICES_PREFERENCES_TRACKED_TRACKED_PERSISTENT_PREF_STORE_FACTORY_H_
-#define SERVICES_PREFERENCES_TRACKED_TRACKED_PERSISTENT_PREF_STORE_FACTORY_H_
-
-#include <utility>
-#include "services/preferences/public/interfaces/preferences_configuration.mojom.h"
-
-namespace base {
-class DictionaryValue;
-class SequencedWorkerPool;
-}
-
-class PersistentPrefStore;
-
-PersistentPrefStore* CreateTrackedPersistentPrefStore(
-    prefs::mojom::TrackedPersistentPrefStoreConfigurationPtr config,
-    base::SequencedWorkerPool* worker_pool);
-
-// TODO(sammc): This should move somewhere more appropriate in the longer term.
-void InitializeMasterPrefsTracking(
-    prefs::mojom::TrackedPersistentPrefStoreConfigurationPtr configuration,
-    base::DictionaryValue* master_prefs);
-
-#endif  // SERVICES_PREFERENCES_TRACKED_TRACKED_PERSISTENT_PREF_STORE_FACTORY_H_