Pref service: integrate PersistentPrefStoreImpl with PrefStoreManagerImpl.

chrome/browser/profiles/profile_impl.cc

 // 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.
 
 #include "chrome/browser/profiles/profile_impl.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 1049 matching lines @@
   return io_data_
       .GetIsolatedMediaRequestContextGetter(partition_path, in_memory).get();
 }
 
 void ProfileImpl::RegisterInProcessServices(StaticServiceMap* services) {
   if (base::FeatureList::IsEnabled(features::kPrefService)) {
     content::ServiceInfo info;
     info.factory =
         base::Bind([]() -> std::unique_ptr<service_manager::Service> {
           return base::MakeUnique<prefs::PrefStoreManagerImpl>(
-              prefs::PrefStoreManagerImpl::PrefStoreTypes());
+              prefs::PrefStoreManagerImpl::PrefStoreTypes(),
+              content::BrowserThread::GetBlockingPool());
         });
     services->insert(std::make_pair(prefs::mojom::kPrefStoreServiceName, info));
   }
 }
 
 bool ProfileImpl::IsSameProfile(Profile* profile) {
   if (profile == static_cast<Profile*>(this))
     return true;
   Profile* otr_profile = off_the_record_profile_.get();
   return otr_profile && profile == otr_profile;
@@ skipping 241 matching lines @@
 ProfileImpl::CreateDomainReliabilityMonitor(PrefService* local_state) {
   domain_reliability::DomainReliabilityService* service =
       domain_reliability::DomainReliabilityServiceFactory::GetInstance()->
           GetForBrowserContext(this);
   if (!service)
     return std::unique_ptr<domain_reliability::DomainReliabilityMonitor>();
 
   return service->CreateMonitor(
       BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
 }