Implement auto-login for ARC kiosk.

chrome/browser/chromeos/login/app_launch_signin_screen.cc

 // Copyright 2013 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 "chrome/browser/chromeos/login/app_launch_signin_screen.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
@@ skipping 90 matching lines @@
 }
 
 void AppLaunchSigninScreen::LoadWallpaper(const AccountId& account_id) {}
 
 void AppLaunchSigninScreen::LoadSigninWallpaper() {
 }
 
 void AppLaunchSigninScreen::OnSigninScreenReady() {
 }
 
+void AppLaunchSigninScreen::OnGaiaScreenReady() {}
+
 void AppLaunchSigninScreen::RemoveUser(const AccountId& account_id) {
   NOTREACHED();
 }
 
 void AppLaunchSigninScreen::ResyncUserData() {
   NOTREACHED();
 }
 
 void AppLaunchSigninScreen::ShowEnterpriseEnrollmentScreen() {
   NOTREACHED();
@@ skipping 106 matching lines @@
 }
 
 void AppLaunchSigninScreen::CheckUserStatus(const AccountId& account_id) {}
 
 bool AppLaunchSigninScreen::IsUserWhitelisted(const AccountId& account_id) {
   NOTREACHED();
   return true;
 }
 
 }  // namespace chromeos