ChromeOS: Fix removeUser button on signin screen.

chrome/browser/chromeos/login/ui/webui_login_display.h

 // Copyright 2014 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_UI_WEBUI_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_DISPLAY_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/chromeos/login/signin_specifics.h"
 #include "chrome/browser/chromeos/login/ui/login_display.h"
 #include "chrome/browser/ui/webui/chromeos/login/native_window_delegate.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "components/user_manager/user.h"
 #include "ui/base/user_activity/user_activity_observer.h"
 #include "ui/views/widget/widget.h"
 
+class AccountId;
+
 namespace chromeos {
 
 // WebUI-based login UI implementation.
 class WebUILoginDisplay : public LoginDisplay,
                           public NativeWindowDelegate,
                           public SigninScreenHandlerDelegate,
                           public ui::UserActivityObserver {
  public:
   explicit WebUILoginDisplay(LoginDisplay::Delegate* delegate);
   ~WebUILoginDisplay() override;
 
   // LoginDisplay implementation:
   void ClearAndEnablePassword() override;
   void Init(const user_manager::UserList& users,
             bool show_guest,
             bool show_users,
             bool show_new_user) override;
   void OnPreferencesChanged() override;
-  void RemoveUser(const std::string& user_id) override;
+  void RemoveUser(const AccountId& account_id) override;
   void SetUIEnabled(bool is_enabled) override;
   void ShowError(int error_msg_id,
                  int login_attempts,
                  HelpAppLauncher::HelpTopic help_topic_id) override;
   void ShowErrorScreen(LoginDisplay::SigninError error_id) override;
   void ShowPasswordChangedDialog(bool show_password_error,
                                  const std::string& email) override;
   void ShowSigninUI(const std::string& email) override;
   void ShowWhitelistCheckFailedError() override;
 
@@ skipping 49 matching lines @@
 
   // Reference to the WebUI handling layer for the login screen
   LoginDisplayWebUIHandler* webui_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_DISPLAY_H_