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

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

Index: chrome/browser/chromeos/arc/auth/arc_auth_info_fetcher.h
diff --git a/chrome/browser/chromeos/arc/auth/arc_auth_info_fetcher.h b/chrome/browser/chromeos/arc/auth/arc_auth_info_fetcher.h
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index 0000000000000000000000000000000000000000..0de66140e7f44791a56a30bd5d5cae713349ba17
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+++ b/chrome/browser/chromeos/arc/auth/arc_auth_info_fetcher.h
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+// 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_INFO_FETCHER_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_AUTH_ARC_AUTH_INFO_FETCHER_H_
+
+#include <string>
+
+#include "base/callback.h"
+
+namespace arc {
+
+// Interface to implement auth_code or enrollment token fetching.
+class ArcAuthInfoFetcher {
+ public:
+  virtual ~ArcAuthInfoFetcher() = default;
+
+  // Fetches the auth code or the enrollment token. On success, |callback| is
+  // called with the fetched |auth_info|. Otherwise, |callback| is called with
+  // empty string.
+  // Fetch() should be called once per 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_info)>;
+  virtual void Fetch(const FetchCallback& callback) = 0;
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_AUTH_ARC_AUTH_INFO_FETCHER_H_