Allow sync with 2-factor StrongAuth accounts in ChromeOS.

chrome/browser/chromeos/login/login_screen.h

 // Copyright (c) 2010 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_LOGIN_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_SCREEN_H_
 #pragma once
 
 #include <string>
 
@@ skipping 25 matching lines @@
   // NewUserView::Delegate:
   virtual void OnLogin(const std::string& username,
                        const std::string& password);
   virtual void OnLoginOffTheRecord();
   virtual void OnCreateAccount();
   virtual void AddStartUrl(const GURL& start_url) { start_url_ = start_url; }
   virtual void ClearErrors();
   virtual void NavigateAway() {}
 
   // Overridden from LoginStatusConsumer.
+  virtual void SetLoginFailure(const LoginFailure& error) {};
   virtual void OnLoginFailure(const LoginFailure& error);
   virtual void OnLoginSuccess(
       const std::string& username,
       const std::string& password,
       const GaiaAuthConsumer::ClientLoginResult& credentials,
       bool pending_requests);
   virtual void OnOffTheRecordLoginSuccess();
 
   // Overridden from views::InfoBubbleDelegate.
   virtual void InfoBubbleClosing(InfoBubble* info_bubble,
@@ skipping 24 matching lines @@
 
   // URL that will be opened on browser startup.
   GURL start_url_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_SCREEN_H_