Remove the mojo serial interfaces and related infrastructure.

device/serial/serial_connection.h

-// Copyright 2014 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_SERIAL_SERIAL_CONNECTION_H_
-#define DEVICE_SERIAL_SERIAL_CONNECTION_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "device/serial/serial.mojom.h"
-
-namespace device {
-
-class DataSinkReceiver;
-class DataSourceSender;
-class ReadOnlyBuffer;
-class SerialIoHandler;
-class WritableBuffer;
-
-class SerialConnection : public serial::Connection {
- public:
-  SerialConnection(scoped_refptr<SerialIoHandler> io_handler,
-                   mojo::InterfaceRequest<serial::DataSink> sink,
-                   mojo::InterfaceRequest<serial::DataSource> source,
-                   mojo::InterfacePtr<serial::DataSourceClient> source_client);
-  ~SerialConnection() override;
-
-  // serial::Connection overrides.
-  void GetInfo(const GetInfoCallback& callback) override;
-  void SetOptions(serial::ConnectionOptionsPtr options,
-                  const SetOptionsCallback& callback) override;
-  void SetControlSignals(serial::HostControlSignalsPtr signals,
-                         const SetControlSignalsCallback& callback) override;
-  void GetControlSignals(const GetControlSignalsCallback& callback) override;
-  void Flush(const FlushCallback& callback) override;
-
- private:
-  void OnSendPipeReady(std::unique_ptr<ReadOnlyBuffer> buffer);
-  void OnSendCancelled(int32_t error);
-  void OnReceivePipeReady(std::unique_ptr<WritableBuffer> buffer);
-
-  scoped_refptr<SerialIoHandler> io_handler_;
-  scoped_refptr<DataSinkReceiver> receiver_;
-  scoped_refptr<DataSourceSender> sender_;
-
-  DISALLOW_COPY_AND_ASSIGN(SerialConnection);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_SERIAL_SERIAL_CONNECTION_H_