Added login screen mode for adding users into session.

chrome/browser/chromeos/login/user_manager_impl.h

 // Copyright (c) 2012 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_USER_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 32 matching lines @@
       public ProfileSyncServiceObserver,
       public content::NotificationObserver,
       public policy::DeviceLocalAccountPolicyService::Observer {
  public:
   virtual ~UserManagerImpl();
 
   // UserManager implementation:
   virtual void Shutdown() OVERRIDE;
   virtual UserImageManager* GetUserImageManager() OVERRIDE;
   virtual const UserList& GetUsers() const OVERRIDE;
+  virtual UserList GetUsersAdmittedForMultiProfile() const OVERRIDE;
   virtual const UserList& GetLoggedInUsers() const OVERRIDE;
   virtual const UserList& GetLRULoggedInUsers() OVERRIDE;
   virtual void UserLoggedIn(const std::string& email,
                             const std::string& username_hash,
                             bool browser_restart) OVERRIDE;
   virtual void SwitchActiveUser(const std::string& email) OVERRIDE;
   virtual void RestoreActiveSessions() OVERRIDE;
   virtual void SessionStarted() OVERRIDE;
   virtual void RemoveUser(const std::string& email,
                           RemoveUserDelegate* delegate) OVERRIDE;
@@ skipping 304 matching lines @@
 
   // Specific flows by user e-mail.
   FlowMap specific_flows_;
 
   DISALLOW_COPY_AND_ASSIGN(UserManagerImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_