chromeos: Remove unused NFC D-Bus client library

chromeos/dbus/nfc_manager_client.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_MANAGER_CLIENT_H_
-#define CHROMEOS_DBUS_NFC_MANAGER_CLIENT_H_
-
-#include <vector>
-
-#include "base/macros.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/dbus_client.h"
-#include "chromeos/dbus/nfc_property_set.h"
-#include "dbus/object_path.h"
-#include "dbus/object_proxy.h"
-#include "dbus/property.h"
-
-namespace chromeos {
-
-// NfcManagerClient is used to communicate with the neard Manager service.
-class CHROMEOS_EXPORT NfcManagerClient : public DBusClient {
- public:
-  // Structure of properties associated with the NFC manager.
-  struct Properties : public NfcPropertySet {
-    // List of Adapter object paths.
-    dbus::Property<std::vector<dbus::ObjectPath> > adapters;
-
-    Properties(dbus::ObjectProxy* object_proxy,
-               const PropertyChangedCallback& callback);
-    ~Properties() override;
-  };
-
-  // Interface for observing changes to the NFC manager. Use this interface
-  // to be notified when NFC adapters get added or removed.
-  // NOTE: Users of the NFC D-Bus client code shouldn't need to observe changes
-  // from NfcManagerClient::Observer; to get notified of changes to the list of
-  // NFC adapters, use NfcAdapterClient::Observer instead.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    // Called when a new adapter with object path |object_path| is added to the
-    // system.
-    virtual void AdapterAdded(const dbus::ObjectPath& object_path) {}
-
-    // Called when an adapter with object path |object_path| is removed from the
-    // system.
-    virtual void AdapterRemoved(const dbus::ObjectPath& object_path) {}
-
-    // Called when the manager property with name |property_name| has acquired
-    // a new value.
-    virtual void ManagerPropertyChanged(const std::string& property_name) {}
-  };
-
-  ~NfcManagerClient() override;
-
-  // Adds and removes observers for events on the NFC manager.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
-  // Obtains the properties of the NFC manager service.
-  virtual Properties* GetProperties() = 0;
-
-  // Creates the instance.
-  static NfcManagerClient* Create();
-
- protected:
-  friend class NfcClientTest;
-
-  NfcManagerClient();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NfcManagerClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_NFC_MANAGER_CLIENT_H_