Add ArcAuthService to handle IPC request from ARC

components/arc/arc_bridge_service.cc

 // Copyright 2015 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 "components/arc/arc_bridge_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/sequenced_task_runner.h"
@@ skipping 44 matching lines @@
   DCHECK(CalledOnValidThread());
   observer_list_.RemoveObserver(observer);
 }
 
 void ArcBridgeService::OnAppInstanceReady(AppInstancePtr app_ptr) {
   DCHECK(CalledOnValidThread());
   app_ptr_ = std::move(app_ptr);
   FOR_EACH_OBSERVER(Observer, observer_list(), OnAppInstanceReady());
 }
 
+void ArcBridgeService::OnAuthInstanceReady(AuthInstancePtr auth_ptr) {
+  DCHECK(CalledOnValidThread());
+  auth_ptr_ = std::move(auth_ptr);
+  FOR_EACH_OBSERVER(Observer, observer_list(), OnAuthInstanceReady());
+}
+
 void ArcBridgeService::OnInputInstanceReady(InputInstancePtr input_ptr) {
   DCHECK(CalledOnValidThread());
   input_ptr_ = std::move(input_ptr);
   FOR_EACH_OBSERVER(Observer, observer_list(), OnInputInstanceReady());
 }
 
 void ArcBridgeService::OnNotificationsInstanceReady(
     NotificationsInstancePtr notifications_ptr) {
   DCHECK(CalledOnValidThread());
   notifications_ptr_ = std::move(notifications_ptr);
@@ skipping 32 matching lines @@
   DCHECK(available_ != available);
   available_ = available;
   FOR_EACH_OBSERVER(Observer, observer_list(), OnAvailableChanged(available_));
 }
 
 bool ArcBridgeService::CalledOnValidThread() {
   return thread_checker_.CalledOnValidThread();
 }
 
 }  // namespace arc