chromeos: Remove unused NFC D-Bus client library

chromeos/dbus/nfc_device_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_DEVICE_CLIENT_H_
-#define CHROMEOS_DBUS_NFC_DEVICE_CLIENT_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/values.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/dbus_client.h"
-#include "chromeos/dbus/nfc_client_helpers.h"
-#include "chromeos/dbus/nfc_property_set.h"
-#include "chromeos/dbus/nfc_record_client.h"
-#include "dbus/object_path.h"
-#include "dbus/object_proxy.h"
-#include "dbus/property.h"
-
-namespace chromeos {
-
-class NfcAdapterClient;
-
-// NfcDeviceClient is used to communicate with objects representing remote NFC
-// devices that can be communicated with.
-class CHROMEOS_EXPORT NfcDeviceClient : public DBusClient {
- public:
-  // Structure of properties associated with an NFC device.
-  struct Properties : public NfcPropertySet {
-    // List of object paths for NDEF records associated with the NFC device.
-    // Read-only.
-    dbus::Property<std::vector<dbus::ObjectPath> > records;
-
-    Properties(dbus::ObjectProxy* object_proxy,
-               const PropertyChangedCallback& callback);
-    ~Properties() override;
-  };
-
-  // Interface for observing changes from a remote NFC device.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    // Called when a remote NFC device with the object |object_path| is added
-    // to the set of known devices.
-    virtual void DeviceAdded(const dbus::ObjectPath& object_path) {}
-
-    // Called when a remote NFC device with the object path |object_path| is
-    // removed from the set of known devices.
-    virtual void DeviceRemoved(const dbus::ObjectPath& object_path) {}
-
-    // Called when the device property with the name |property_name| on device
-    // with object path |object_path| has acquired a new value.
-    virtual void DevicePropertyChanged(const dbus::ObjectPath& object_path,
-                                       const std::string& property_name) {}
-  };
-
-  ~NfcDeviceClient() override;
-
-  // Adds and removes observers for events on all remote NFC devices. Check the
-  // |object_path| parameter of observer methods to determine which device is
-  // issuing the event.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
-  // Returns the list of device object paths associated with the given adapter
-  // identified by the D-Bus object path |adapter_path|.
-  virtual std::vector<dbus::ObjectPath> GetDevicesForAdapter(
-      const dbus::ObjectPath& adapter_path) = 0;
-
-  // Obtain the properties for the NFC device with object path |object_path|;
-  // any values should be copied if needed.
-  virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
-
-  // Creates an NDEF record for the NFC device with object path |object_path|
-  // using the parameters in |attributes|. |attributes| is a dictionary,
-  // containing the NFC Record properties which will be assigned to the
-  // resulting record object and pushed to the device. The properties are
-  // defined by the NFC Record interface (see namespace "nfc_record" in
-  // third_party/cros_system_api/dbus/service_constants.h and
-  // NfcRecordClient::Properties). |attributes| should at least contain a
-  // "Type" plus any other properties associated with that type. For example:
-  //
-  //    {
-  //      "Type": "Text",
-  //      "Encoding": "UTF-8",
-  //      "Language": "en",
-  //      "Representation": "Chrome OS rulez!"
-  //    },
-  //    {
-  //      "Type": "URI",
-  //      "URI": "http://www.chromium.org"
-  //    },
-  //    etc.
-  virtual void Push(
-      const dbus::ObjectPath& object_path,
-      const base::DictionaryValue& attributes,
-      const base::Closure& callback,
-      const nfc_client_helpers::ErrorCallback& error_callback) = 0;
-
-  // Creates the instance.
-  static NfcDeviceClient* Create(NfcAdapterClient* adapter_client);
-
- protected:
-  friend class NfcClientTest;
-
-  NfcDeviceClient();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NfcDeviceClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_NFC_DEVICE_CLIENT_H_