Use udev for serial device enumeration on Linux

device/serial/serial_device_enumerator.cc

Index: device/serial/serial_device_enumerator.cc
diff --git a/device/serial/serial_device_enumerator.cc b/device/serial/serial_device_enumerator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0b18bd5310dc9622370b2638b5ed9db175c351d7
--- /dev/null
+++ b/device/serial/serial_device_enumerator.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.

[rpaquay, 2014/02/12 00:39:28]

nit: no "(c)" in copyright notice (same for many files in CL).

[Ken Rockot(use gerrit already), 2014/02/12 01:22:45]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "device/serial/serial_device_enumerator.h"
+
+namespace device {
+
+SerialDeviceEnumerator::SerialDeviceEnumerator() {}
+
+SerialDeviceEnumerator::~SerialDeviceEnumerator() {}
+
+}  // namespace device