Use udev for serial device enumeration on Linux

device/serial/serial_device_info.h

Index: device/serial/serial_device_info.h
diff --git a/device/serial/serial_device_info.h b/device/serial/serial_device_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..277bb076edb3b12f79b061b11981720452fbab3e
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+++ b/device/serial/serial_device_info.h
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+// 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_INFO_H_
+#define DEVICE_SERIAL_SERIAL_DEVICE_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace device {
+
+struct SerialDeviceInfo {
+  SerialDeviceInfo();
+  ~SerialDeviceInfo();
+
+  std::string path;
+  scoped_ptr<uint16> vendor_id;
+  scoped_ptr<uint16> product_id;
+  scoped_ptr<std::string> display_name;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SerialDeviceInfo);
+};
+
+typedef std::vector<linked_ptr<SerialDeviceInfo> > SerialDeviceInfoList;
+
+}  // namespace device
+
+#endif  // DEVICE_SERIAL_SERIAL_DEVICE_INFO_H_