WIP: Pref service: use the incognito support from Chrome

chrome/browser/prefs/chrome_pref_service_factory.h

 // Copyright (c) 2012 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_CHROME_PREF_SERVICE_FACTORY_H_
 #define CHROME_BROWSER_PREFS_CHROME_PREF_SERVICE_FACTORY_H_
 
 #include <memory>
 
 #include "base/memory/ref_counted.h"
 #include "services/preferences/public/interfaces/tracked_preference_validation_delegate.mojom.h"
 
 namespace base {
 class DictionaryValue;
 class FilePath;
 class SequencedTaskRunner;
 class Time;
 }
 
 namespace policy {
 class PolicyService;
 }
 
 namespace service_manager {
 class Connector;
 }
 
 namespace sync_preferences {
-class PrefServiceSyncable;
+class PrefServiceSyncableFactory;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 class PrefRegistry;
 class PrefService;
 
 class PrefStore;
@@ skipping 27 matching lines @@
 // guaranteed that in asynchronous version initialization happens after this
 // function returned.
 
 std::unique_ptr<PrefService> CreateLocalState(
     const base::FilePath& pref_filename,
     base::SequencedTaskRunner* pref_io_task_runner,
     policy::PolicyService* policy_service,
     const scoped_refptr<PrefRegistry>& pref_registry,
     bool async);
 
-std::unique_ptr<sync_preferences::PrefServiceSyncable> CreateProfilePrefs(
+std::unique_ptr<sync_preferences::PrefServiceSyncableFactory>
+CreateProfilePrefs(
     const base::FilePath& pref_filename,
     prefs::mojom::TrackedPreferenceValidationDelegatePtr validation_delegate,
     policy::PolicyService* policy_service,
     SupervisedUserSettingsService* supervised_user_settings,
     const scoped_refptr<PrefStore>& extension_prefs,
     const scoped_refptr<user_prefs::PrefRegistrySyncable>& pref_registry,
     bool async,
     service_manager::Connector* connector);
 
 // Call before startup tasks kick in to ignore the presence of a domain when
@@ skipping 13 matching lines @@
 // Clears the time of the last preference reset event, if any, for the provided
 // profile.
 void ClearResetTime(Profile* profile);
 
 // Register user prefs used by chrome preference system.
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
 }  // namespace chrome_prefs
 
 #endif  // CHROME_BROWSER_PREFS_CHROME_PREF_SERVICE_FACTORY_H_