chromeos: Remove unused NFC D-Bus client library

chromeos/dbus/nfc_property_set.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 CHROMEOS_DBUS_NFC_PROPERTY_SET_H_
-#define CHROMEOS_DBUS_NFC_PROPERTY_SET_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "dbus/message.h"
-#include "dbus/object_proxy.h"
-#include "dbus/property.h"
-
-namespace chromeos {
-
-// neard doesn't use the standard D-Bus interfaces for property access and
-// instead defines property accessor methods in each D-Bus interface. This
-// class customizes dbus::PropertySet to generate the correct method call to
-// get all properties, connect to the correct signal and parse it correctly.
-class NfcPropertySet : public dbus::PropertySet {
- public:
-  NfcPropertySet(dbus::ObjectProxy* object_proxy,
-                 const std::string& interface,
-                 const PropertyChangedCallback& callback);
-
-  // Destructor; we don't hold on to any references or memory that needs
-  // explicit clean-up, but clang thinks we might.
-  ~NfcPropertySet() override;
-
-  // Caches |callback| so that it will be invoked after a call to GetAll()
-  // has successfully received all existing properties from the remote object.
-  void SetAllPropertiesReceivedCallback(const base::Closure& callback);
-
-  // dbus::PropertySet overrides
-  void ConnectSignals() override;
-  void Get(dbus::PropertyBase* property, GetCallback callback) override;
-  void GetAll() override;
-  void OnGetAll(dbus::Response* response) override;
-  void Set(dbus::PropertyBase* property, SetCallback callback) override;
-  void ChangedReceived(dbus::Signal* signal) override;
-
- protected:
-  const base::Closure& on_get_all_callback() { return on_get_all_callback_; }
-
- private:
-  void OnGetAllError(dbus::ErrorResponse* response);
-
-  // Optional callback used to notify clients when all properties were received
-  // after a call to GetAll.
-  base::Closure on_get_all_callback_;
-
-  base::WeakPtrFactory<NfcPropertySet> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(NfcPropertySet);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_NFC_PROPERTY_SET_H_