Create Mojo Struct for user information used in login/lock screen.

chrome/browser/ui/ash/lock_screen_client.h

 // Copyright 2017 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_ASH_LOCK_SCREEN_CLIENT_H_
 #define CHROME_BROWSER_UI_ASH_LOCK_SCREEN_CLIENT_H_
 
 #include "ash/public/interfaces/lock_screen.mojom.h"
 #include "base/macros.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ skipping 35 matching lines @@
                         const std::string& error_text,
                         const std::string& help_link_text,
                         int32_t help_topic_id);
   void ClearErrors();
   void ShowUserPodCustomIcon(const AccountId& account_id,
                              ash::mojom::UserPodCustomIconOptionsPtr icon);
   void HideUserPodCustomIcon(const AccountId& account_id);
   void SetAuthType(const AccountId& account_id,
                    ash::mojom::AuthType auth_type,
                    const base::string16& initial_value);
-  void LoadUsers(std::unique_ptr<base::ListValue> users_list, bool show_guest);
+  void LoadUsers(std::vector<ash::mojom::LoginUserInfoPtr> users_list,
+                 bool show_guest);
 
   void SetDelegate(Delegate* delegate);
 
  private:
   // Lock screen mojo service in ash.
   ash::mojom::LockScreenPtr lock_screen_;
 
   // Binds this object to the client interface.
   mojo::Binding<ash::mojom::LockScreenClient> binding_;
   Delegate* delegate_ = nullptr;
 
   DISALLOW_COPY_AND_ASSIGN(LockScreenClient);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LOCK_SCREEN_CLIENT_H_