Refactor device::BluetoothGattXXX classes to split into remote/local.

device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.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 DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_GATT_DESCRIPTOR_BLUEZ_H_
+#define DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_GATT_DESCRIPTOR_BLUEZ_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "dbus/object_path.h"
+#include "device/bluetooth/bluetooth_gatt_descriptor.h"
+
+namespace bluez {
+
+class BluetoothGattCharacteristicBlueZ;
+
+// The BluetoothGattDescriptorBlueZ class implements BluetoothGattDescriptor for
+// GATT characteristic descriptors for platforms that use BlueZ.
+class BluetoothGattDescriptorBlueZ
+    : public virtual device::BluetoothGattDescriptor {
+ public:
+  // device::BluetoothGattDescriptor overrides.
+  std::string GetIdentifier() const override;
+
+  // Object path of the underlying D-Bus characteristic.
+  const dbus::ObjectPath& object_path() const { return object_path_; }
+
+ protected:
+  explicit BluetoothGattDescriptorBlueZ(const dbus::ObjectPath& object_path);
+  ~BluetoothGattDescriptorBlueZ() override;
+
+ private:
+  // Called by dbus:: on unsuccessful completion of a request to read or write
+  // the descriptor value.
+  void OnError(const ErrorCallback& error_callback,
+               const std::string& error_name,
+               const std::string& error_message);
+
+  // Object path of the D-Bus descriptor object.
+  dbus::ObjectPath object_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothGattDescriptorBlueZ);
+};
+
+}  // namespace bluez
+
+#endif  // DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_GATT_DESCRIPTOR_BLUEZ_H_