Attempt to recover sync token for managed user once we detected that sync auth fails.

chrome/browser/chromeos/login/supervised_user_manager_impl.h

Index: chrome/browser/chromeos/login/supervised_user_manager_impl.h
diff --git a/chrome/browser/chromeos/login/supervised_user_manager_impl.h b/chrome/browser/chromeos/login/supervised_user_manager_impl.h
index cbc78ed69293a77f09f087d1b632d2c85f0358a1..6cb5060d9ad5812b0ff547301a4281fcaeadf030 100644
--- a/chrome/browser/chromeos/login/supervised_user_manager_impl.h
+++ b/chrome/browser/chromeos/login/supervised_user_manager_impl.h
@@ -49,6 +49,12 @@ class SupervisedUserManagerImpl
   virtual void SetPasswordInformation(
       const std::string& user_id,
       const base::DictionaryValue* password_info) OVERRIDE;
+  virtual void LoadSupervisedUserToken(
+      Profile * profile,
+      const LoadTokenCallback& callback) OVERRIDE;
+  virtual void ConfigureSyncWithToken(
+      Profile* profile,
+      const std::string& token) OVERRIDE;
 
  private:
   friend class UserManager;