WIP: Pref service user prefs.

chrome/browser/profiles/profile_impl.cc

Index: chrome/browser/profiles/profile_impl.cc
diff --git a/chrome/browser/profiles/profile_impl.cc b/chrome/browser/profiles/profile_impl.cc
index 388d6a1079f236ba34a84c4bcd210b366e8aff4e..d354eac5e34061fad05e3bebb4df313dae5aaf81 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -496,7 +496,7 @@ ProfileImpl::ProfileImpl(
       connector = content::BrowserContext::GetConnectorFor(this);
     }
     prefs_ = chrome_prefs::CreateProfilePrefs(
-        path_, sequenced_task_runner, pref_validation_delegate_.get(),
+        path_, sequenced_task_runner, &pref_validation_delegate_,
         profile_policy_connector_->policy_service(), supervised_user_settings,
         CreateExtensionPrefStore(this, false), pref_registry_, async_prefs,
         connector);
@@ -1057,8 +1057,11 @@ void ProfileImpl::RegisterInProcessServices(StaticServiceMap* services) {
     info.factory =
         base::Bind([]() -> std::unique_ptr<service_manager::Service> {
           return base::MakeUnique<prefs::PrefStoreManagerImpl>(
-              prefs::PrefStoreManagerImpl::PrefStoreTypes());
+              prefs::PrefStoreManagerImpl::PrefStoreTypes(),
+              content::BrowserThread::GetBlockingPool());
         });
+    info.task_runner = content::BrowserThread::GetTaskRunnerForThread(
+        content::BrowserThread::IO);
     services->insert(std::make_pair(prefs::mojom::kPrefStoreServiceName, info));
   }
 }