Implement auto-login for ARC kiosk.

chrome/browser/chromeos/login/ui/login_display.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 48 matching lines @@
     // Used when the lock screen is being displayed.
     virtual void Signout() = 0;
 
     // Complete sign process with specified |user_context|.
     // Used for new users authenticated through an extension.
     virtual void CompleteLogin(const UserContext& user_context) = 0;
 
     // Notify the delegate when the sign-in UI is finished loading.
     virtual void OnSigninScreenReady() = 0;
 
+    // Notify the delegate when the GAIA UI is finished loading.
+    virtual void OnGaiaScreenReady() = 0;
+
     // Called when the user requests enterprise enrollment.
     virtual void OnStartEnterpriseEnrollment() = 0;
 
     // Called when the user requests enable developer features screen.
     virtual void OnStartEnableDebuggingScreen() = 0;
 
     // Called when the user requests kiosk enable screen.
     virtual void OnStartKioskEnableScreen() = 0;
 
     // Called when the owner permission for kiosk app auto launch is requested.
@@ skipping 96 matching lines @@
   // in redesigned login stack.
   // Login stack (and this object) will be recreated for next user sign in.
   bool is_signin_completed_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_H_