Add ArcNotificationManager for new ARC notification

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 68f01cb1146e96bb9c8ffe3f17a9c88cd55a79a3..fad024131b767551b4b89d484c6f04360cb34ef1 100644
--- a/components/arc/arc_service_manager.cc
+++ b/components/arc/arc_service_manager.cc
@@ -9,6 +9,7 @@
 #include "components/arc/arc_bridge_bootstrap.h"
 #include "components/arc/arc_bridge_service_impl.h"
 #include "components/arc/input/arc_input_bridge.h"
+#include "components/arc/notification/arc_notification_manager.h"
 #include "components/arc/settings/arc_settings_bridge.h"
 
 namespace arc {
@@ -50,4 +51,11 @@ ArcBridgeService* ArcServiceManager::arc_bridge_service() {
   return arc_bridge_service_.get();
 }
 
+void ArcServiceManager::PostProfileInit(const AccountId& account_id) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  arc_notification_manager_.reset(
+      new ArcNotificationManager(arc_bridge_service(), account_id));
+}
+
 }  // namespace arc