Use udev for serial device enumeration on Linux

device/serial/serial_device_enumerator.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_DEVICE_ENUMERATOR_H_
+#define DEVICE_SERIAL_SERIAL_DEVICE_ENUMERATOR_H_
+
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "device/serial/serial_device_info.h"
+
+namespace device {
+
+// Discovers and enumerates serial devices available to the host.
+class SerialDeviceEnumerator {
+ public:
+  static scoped_ptr<SerialDeviceEnumerator> Create();
+
+  SerialDeviceEnumerator();
+  virtual ~SerialDeviceEnumerator();
+
+  virtual void GetDevices(SerialDeviceInfoList* devices) = 0;
+};
+
+}  // namespace device
+
+#endif  // DEVICE_SERIAL_SERIAL_DEVICE_ENUMERATOR_H_