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

chrome/browser/chromeos/login/user_selection_screen_proxy.h

Index: chrome/browser/chromeos/login/user_selection_screen_proxy.h
diff --git a/chrome/browser/chromeos/login/user_selection_screen_proxy.h b/chrome/browser/chromeos/login/user_selection_screen_proxy.h
index 4d4fb5b0d923f0f2054650b34d5a965830801c1a..82ec0004fb2c85343ce256c4c0d02871e3f68f40 100644
--- a/chrome/browser/chromeos/login/user_selection_screen_proxy.h
+++ b/chrome/browser/chromeos/login/user_selection_screen_proxy.h
@@ -31,10 +31,9 @@ class UserSelectionScreenProxy : public chromeos::UserBoardView {
       const proximity_auth::ScreenlockBridge::UserPodCustomIconOptions& icon)
       override;
   void HideUserPodCustomIcon(const AccountId& account_id) override;
-  void SetAuthType(
-      const AccountId& account_id,
-      proximity_auth::ScreenlockBridge::LockHandler::AuthType auth_type,
-      const base::string16& initial_value) override;
+  void SetAuthType(const AccountId& account_id,
+                   proximity_auth::mojom::AuthType auth_type,
+                   const base::string16& initial_value) override;
   void Bind(chromeos::UserSelectionScreen* screen) override{};
   void Unbind() override{};
   base::WeakPtr<UserBoardView> GetWeakPtr() override;