[CrOS Tether] Move LocalDeviceDataProvider from //chromeos/components/tether to //components/crypta…

chromeos/components/tether/local_device_data_provider.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 CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H_
-#define CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ptr_util.h"
-
-namespace cryptauth {
-class BeaconSeed;
-class CryptAuthService;
-}
-
-namespace chromeos {
-
-namespace tether {
-
-// Fetches CryptAuth data about the local device (i.e., the device on which this
-// code is running) for the current user (i.e., the one which is logged-in).
-class LocalDeviceDataProvider {
- public:
-  explicit LocalDeviceDataProvider(
-      cryptauth::CryptAuthService* cryptauth_service);
-  virtual ~LocalDeviceDataProvider();
-
-  // Fetches the public key and/or the beacon seeds for the local device.
-  // Returns whether the operation succeeded. If |nullptr| is passed as a
-  // parameter, the associated data will not be fetched.
-  virtual bool GetLocalDeviceData(
-      std::string* public_key_out,
-      std::vector<cryptauth::BeaconSeed>* beacon_seeds_out) const;
-
- private:
-  friend class LocalDeviceDataProviderTest;
-
-  cryptauth::CryptAuthService* cryptauth_service_;
-
-  DISALLOW_COPY_AND_ASSIGN(LocalDeviceDataProvider);
-};
-
-}  // namespace tether
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_COMPONENTS_TETHER_LOCAL_DEVICE_DATA_PROVIDER_H_