Bluetooth: remove legacy backend

device/bluetooth/bluetooth_socket_chromeos.h

-// Copyright (c) 2012 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_BLUETOOTH_SOCKET_CHROMEOS_H_
-#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "device/bluetooth/bluetooth_socket.h"
-
-namespace device {
-
-class BluetoothServiceRecord;
-
-}  // namespace device
-
-namespace net {
-
-class DrainableIOBuffer;
-class GrowableIOBuffer;
-
-}  // namespace net
-
-namespace chromeos {
-
-// This class is an implementation of BluetoothSocket class for Chrome OS
-// platform.
-class BluetoothSocketChromeOS : public device::BluetoothSocket {
- public:
-  static scoped_refptr<device::BluetoothSocket> CreateBluetoothSocket(
-      const device::BluetoothServiceRecord& service_record);
-
-  // BluetoothSocket override
-  virtual bool Receive(net::GrowableIOBuffer* buffer) OVERRIDE;
-  virtual bool Send(net::DrainableIOBuffer* buffer) OVERRIDE;
-  virtual std::string GetLastErrorMessage() const OVERRIDE;
-
- protected:
-  virtual ~BluetoothSocketChromeOS();
-
- private:
-  BluetoothSocketChromeOS(int fd);
-
-  const int fd_;
-  std::string error_message_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothSocketChromeOS);
-};
-
-}  // namespace chromeos
-
-#endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_