Get enrollment token from DMServer when an Active Directory user uses ARC

chrome/browser/chromeos/arc/auth/arc_auth_code_fetcher.h

-// Copyright 2016 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_ARC_AUTH_ARC_AUTH_CODE_FETCHER_H_
-#define CHROME_BROWSER_CHROMEOS_ARC_AUTH_ARC_AUTH_CODE_FETCHER_H_
-
-#include <string>
-
-#include "base/callback.h"
-
-namespace arc {
-
-// Interface to implement auth_code fetching.
-class ArcAuthCodeFetcher {
- public:
-  virtual ~ArcAuthCodeFetcher() = default;
-
-  // Fetches the |auth_code|. On success, |callback| is called with the
-  // fetched |auth_code|. Otherwise, |callback| is called with empty string.
-  // Fetch() should be called once par instance, and it is expected that
-  // the inflight operation is cancelled without calling the |callback|
-  // when the instance is deleted.
-  using FetchCallback = base::Callback<void(const std::string& auth_code)>;
-  virtual void Fetch(const FetchCallback& callback) = 0;
-};
-
-}  // namespace arc
-
-#endif  // CHROME_BROWSER_CHROMEOS_ARC_AUTH_ARC_AUTH_CODE_FETCHER_H_