Re-authenticate oauth tokens after crash and restart Sync.

chrome/browser/chromeos/login/login_utils.h

 // Copyright (c) 2011 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_UTILS_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_UTILS_H_
 #pragma once
 
 #include <string>
 
@@ skipping 71 matching lines @@
   // entire login process, even for multiple retries. Authenticator instance
   // holds reference to login profile and is later used during fetching of
   // OAuth tokens.
   // TODO(nkostylev): Cleanup after WebUI login migration is complete.
   virtual scoped_refptr<Authenticator> CreateAuthenticator(
       LoginStatusConsumer* consumer) = 0;
 
   // Prewarms the authentication network connection.
   virtual void PrewarmAuthentication() = 0;
 
+  // Restores authentication session after crash.
+  virtual void RestoreAuthenticationSession(const std::string& user_name,
+                                            Profile* profile) = 0;
+
   // Given the credentials try to exchange them for
   // full-fledged Google authentication cookies.
   virtual void FetchCookies(
       Profile* profile,
       const GaiaAuthConsumer::ClientLoginResult& credentials) = 0;
 
   // Starts process of fetching OAuth2 tokens (based on OAuth1 tokens found
   // in |user_profile|) and kicks off internal services that depend on them.
   virtual void StartTokenServices(Profile* user_profile) = 0;
 
@@ skipping 29 matching lines @@
   // given command line.
   virtual std::string GetOffTheRecordCommandLine(
       const GURL& start_url,
       const CommandLine& base_command_line,
       CommandLine* command_line) = 0;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_UTILS_H_