Implement auto-login for ARC kiosk.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 122 matching lines @@
 
   // --------------- Account creation methods.
   // Confirms sign up by provided credentials in |user_context|.
   // Used for new user login via GAIA extension.
   virtual void CompleteLogin(const UserContext& user_context) = 0;
 
   // --------------- Shared with login display methods.
   // 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;
+
   // Shows Enterprise Enrollment screen.
   virtual void ShowEnterpriseEnrollmentScreen() = 0;
 
   // Shows Enable Developer Features screen.
   virtual void ShowEnableDebuggingScreen() = 0;
 
   // Shows Kiosk Enable screen.
   virtual void ShowKioskEnableScreen() = 0;
 
   // Shows Reset screen.
@@ skipping 357 matching lines @@
   std::unique_ptr<LoginFeedback> login_feedback_;
 
   base::WeakPtrFactory<SigninScreenHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_