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

chrome/browser/chromeos/login/supervised_user_manager.h

 // Copyright 2013 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_SUPERVISED_USER_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_USER_MANAGER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/strings/string16.h"
 #include "base/values.h"
+#include "chrome/browser/profiles/profile.h"
 
 class PrefRegistrySimple;
 
 namespace chromeos {
 
 class User;
 class SupervisedUserAuthentication;
 
 // Keys in dictionary with supervised password information.
 extern const char kSchemaVersion[];
 extern const char kPasswordRevision[];
 extern const char kSalt[];
 extern const char kEncryptedPassword[];
 extern const int kMinPasswordRevision;
 
 // Base class for SupervisedUserManagerImpl - provides a mechanism for getting
 // and setting specific values for supervised users, as well as additional
 // lookup methods that make sense only for supervised users.
 class SupervisedUserManager {
  public:
+  typedef base::Callback<void(const std::string& /* token */)>
+      LoadTokenCallback;
+
   // Registers user manager preferences.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   SupervisedUserManager() {}
   virtual ~SupervisedUserManager() {}
 
   // Creates supervised user with given |display_name| and |local_user_id|
   // and persists that to user list. Also links this user identified by
   // |sync_user_id| to manager with a |manager_id|.
   // Returns created user, or existing user if there already
@@ skipping 54 matching lines @@
   // State.
   virtual void GetPasswordInformation(const std::string& user_id,
                                       base::DictionaryValue* result) = 0;
 
   // Stores public password-specific data from |password_info| for |user_id| in
   // Local State.
   virtual void SetPasswordInformation(
       const std::string& user_id,
       const base::DictionaryValue* password_info) = 0;
 
+  // Loads a sync oauth token in background, and passes it to callback.
+  virtual void LoadSupervisedUserToken(Profile* profile,
+                                       const LoadTokenCallback& callback) = 0;
+
+  // Configures sync service with oauth token.
+  virtual void ConfigureSyncWithToken(Profile* profile,
+                                      const std::string& token) = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_USER_MANAGER_H_