Implement a policy to autologin a public account.

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 <set>
 #include <string>
 
@@ skipping 88 matching lines @@
   // Create a new locally managed user.
   virtual void CreateLocallyManagedUser(const string16& display_name,
                                         const std::string password) = 0;
 
   // Load wallpaper for given |username|.
   virtual void LoadWallpaper(const std::string& username) = 0;
 
   // Loads the default sign-in wallpaper.
   virtual void LoadSigninWallpaper() = 0;
 
+  // Notify the delegate when the sign-in UI is finished loading.
+  virtual void OnSigninScreenReady() = 0;
+
   // Attempts to remove given user.
   virtual void RemoveUser(const std::string& username) = 0;
 
   // Ignore password change, remove existing cryptohome and
   // force full sync of user data.
   virtual void ResyncUserData() = 0;
 
   // Shows Enterprise Enrollment screen.
   virtual void ShowEnterpriseEnrollmentScreen() = 0;
 
@@ skipping 304 matching lines @@
   // NOTIFICATION_AUTH_NEEDED and reset on either NOTIFICATION_AUTH_SUPPLIED or
   // NOTIFICATION_AUTH_CANCELLED.
   bool has_pending_auth_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_