[M53 cherry-pick] Migrate ArcUserDataService into ArcAuthService.

components/arc/arc_service_manager.cc

Index: components/arc/arc_service_manager.cc
diff --git a/components/arc/arc_service_manager.cc b/components/arc/arc_service_manager.cc
index 1cfbf9d00bb1cb3485c92eda5e2aaf3f6f5cd769..b3cbe7a16d482006744b74869b3d18e6569b6a81 100644
--- a/components/arc/arc_service_manager.cc
+++ b/components/arc/arc_service_manager.cc
@@ -98,10 +98,6 @@ void ArcServiceManager::OnPrimaryUserProfilePrepared(
     const AccountId& account_id,
     std::unique_ptr<BooleanPrefMember> arc_enabled_pref) {
   DCHECK(thread_checker_.CalledOnValidThread());
-
-  arc_user_data_service_.reset(new ArcUserDataService(arc_bridge_service(),
-      std::move(arc_enabled_pref), account_id));
-
   AddService(base::WrapUnique(
       new ArcNotificationManager(arc_bridge_service(), account_id)));
 }
@@ -120,7 +116,6 @@ void ArcServiceManager::OnAshStarted() {
 void ArcServiceManager::Shutdown() {
   icon_loader_ = nullptr;
   activity_resolver_ = nullptr;
-  arc_user_data_service_ = nullptr;
   services_.clear();
 }