Support Sync following Gaia OAuth authentication

chrome/browser/sync/signin_manager.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.
 //
 // The signin manager encapsulates some functionality tracking
 // which user is signed in. When a user is signed in, a ClientLogin
 // request is run on their behalf. Auth tokens are fetched from Google
 // and the results are stored in the TokenService.
 
 #ifndef CHROME_BROWSER_SYNC_SIGNIN_MANAGER_H_
@@ skipping 98 matching lines @@
   virtual void OnUserInfoSuccess(const std::string& email) OVERRIDE;
   virtual void OnUserInfoFailure(const GoogleServiceAuthError& error) OVERRIDE;
 
   // NotificationObserver
   virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details) OVERRIDE;
 
  private:
   void PrepareForSignin();
+  void PrepareForOAuthSignin();
 
   Profile* profile_;
+
+  // ClientLogin identity.
   std::string username_;
   std::string password_;  // This is kept empty whenever possible.
   bool had_two_factor_error_;
 
+  // OAuth identity.
+  std::string oauth_username_;
+
   void CleanupNotificationRegistration();
 
   // Result of the last client login, kept pending the lookup of the
   // canonical email.
   ClientLoginResult last_result_;
 
   // Actual client login handler.
   scoped_ptr<GaiaAuthFetcher> client_login_;
 
   // Actual OAuth login handler.
   scoped_ptr<GaiaOAuthFetcher> oauth_login_;
 
   // Register for notifications from the TokenService.
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninManager);
 };
 
 #endif  // CHROME_BROWSER_SYNC_SIGNIN_MANAGER_H_