chromeos: Remove unused NFC D-Bus client library

device/nfc/nfc_adapter_chromeos.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 DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_
-#define DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "chromeos/dbus/nfc_adapter_client.h"
-#include "chromeos/dbus/nfc_device_client.h"
-#include "chromeos/dbus/nfc_tag_client.h"
-#include "dbus/object_path.h"
-#include "device/nfc/nfc_adapter.h"
-
-namespace device {
-
-class NfcAdapterFactory;
-
-}  // namespace device
-
-namespace chromeos {
-
-// The NfcAdapterChromeOS class implements NfcAdapter for the Chrome OS
-// platform.
-class NfcAdapterChromeOS : public device::NfcAdapter,
-                           public chromeos::NfcAdapterClient::Observer,
-                           public chromeos::NfcDeviceClient::Observer,
-                           public chromeos::NfcTagClient::Observer {
- public:
-  // NfcAdapter overrides.
-  void AddObserver(NfcAdapter::Observer* observer) override;
-  void RemoveObserver(NfcAdapter::Observer* observer) override;
-  bool IsPresent() const override;
-  bool IsPowered() const override;
-  bool IsPolling() const override;
-  bool IsInitialized() const override;
-  void SetPowered(bool powered,
-                  const base::Closure& callback,
-                  const ErrorCallback& error_callback) override;
-  void StartPolling(const base::Closure& callback,
-                    const ErrorCallback& error_callback) override;
-  void StopPolling(const base::Closure& callback,
-                   const ErrorCallback& error_callback) override;
-
- private:
-  friend class device::NfcAdapterFactory;
-  friend class NfcChromeOSTest;
-
-  NfcAdapterChromeOS();
-  ~NfcAdapterChromeOS() override;
-
-  // NfcAdapterClient::Observer overrides.
-  void AdapterAdded(const dbus::ObjectPath& object_path) override;
-  void AdapterRemoved(const dbus::ObjectPath& object_path) override;
-  void AdapterPropertyChanged(const dbus::ObjectPath& object_path,
-                              const std::string& property_name) override;
-
-  // NfcDeviceClient::Observer overrides.
-  void DeviceAdded(const dbus::ObjectPath& object_path) override;
-  void DeviceRemoved(const dbus::ObjectPath& object_path) override;
-
-  // NfcTagClient::Observer overrides.
-  void TagAdded(const dbus::ObjectPath& object_path) override;
-  void TagRemoved(const dbus::ObjectPath& object_path) override;
-
-  // Set the tracked adapter to the one in |object_path|, this object will
-  // subsequently operate on that adapter until it is removed.
-  void SetAdapter(const dbus::ObjectPath& object_path);
-
-  // Remove the currently tracked adapter. IsPresent() will return false after
-  // this is called.
-  void RemoveAdapter();
-
-  // Announce to observers a change in the adapter state.
-  void PoweredChanged(bool powered);
-  void PollingChanged(bool polling);
-  void PresentChanged(bool present);
-
-  // Called by dbus:: on completion of the powered property change.
-  void OnSetPowered(const base::Closure& callback,
-                    const ErrorCallback& error_callback,
-                    bool success);
-
-  // Called by dbus:: on completion of the D-Bus method call to start polling.
-  void OnStartPolling(const base::Closure& callback);
-  void OnStartPollingError(const ErrorCallback& error_callback,
-                           const std::string& error_name,
-                           const std::string& error_message);
-
-  // Called by dbus:: on completion of the D-Bus method call to stop polling.
-  void OnStopPolling(const base::Closure& callback);
-  void OnStopPollingError(const ErrorCallback& error_callback,
-                          const std::string& error_name,
-                          const std::string& error_message);
-
-  // Object path of the adapter that we are currently tracking.
-  dbus::ObjectPath object_path_;
-
-  // List of observers interested in event notifications from us.
-  base::ObserverList<device::NfcAdapter::Observer> observers_;
-
-  // Note: This should remain the last member so it'll be destroyed and
-  // invalidate its weak pointers before any other members are destroyed.
-  base::WeakPtrFactory<NfcAdapterChromeOS> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(NfcAdapterChromeOS);
-};
-
-}  // namespace chromeos
-
-#endif  // DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_