arc: Revamp the ArcBridgeService interface

chrome/browser/chromeos/arc/arc_auth_service.cc

Index: chrome/browser/chromeos/arc/arc_auth_service.cc
diff --git a/chrome/browser/chromeos/arc/arc_auth_service.cc b/chrome/browser/chromeos/arc/arc_auth_service.cc
index 6ac8869e8447b5acb705e45fd1aa9b919e218f44..57780eb288f9705bb1ccb7ff93bc8c54558781ae 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service.cc
+++ b/chrome/browser/chromeos/arc/arc_auth_service.cc
@@ -101,6 +101,7 @@ ArcAuthService::ArcAuthService(ArcBridgeService* bridge_service)
   arc_auth_service = this;
 
   arc_bridge_service()->AddObserver(this);
+  arc_bridge_service()->auth()->AddObserver(this);
 }
 
 ArcAuthService::~ArcAuthService() {
@@ -108,6 +109,7 @@ ArcAuthService::~ArcAuthService() {
   DCHECK(arc_auth_service == this);
 
   Shutdown();
+  arc_bridge_service()->auth()->RemoveObserver(this);
   arc_bridge_service()->RemoveObserver(this);
 
   arc_auth_service = nullptr;
@@ -190,9 +192,9 @@ bool ArcAuthService::IsAllowedForProfile(const Profile* profile) {
   return true;
 }
 
-void ArcAuthService::OnAuthInstanceReady() {
-  arc_bridge_service()->auth_instance()->Init(
-      binding_.CreateInterfacePtrAndBind());
+void ArcAuthService::OnInstanceReady(mojom::AuthInstance* auth_instance,
+                                     uint32_t version) {
+  auth_instance->Init(binding_.CreateInterfacePtrAndBind());
 }
 
 void ArcAuthService::OnBridgeStopped() {