Use udev for serial device enumeration on Linux

chrome/browser/extensions/api/serial/serial_port_enumerator.cc

Index: chrome/browser/extensions/api/serial/serial_port_enumerator.cc
diff --git a/chrome/browser/extensions/api/serial/serial_port_enumerator.cc b/chrome/browser/extensions/api/serial/serial_port_enumerator.cc
deleted file mode 100644
index 44e4668215244a9991085345f87ab5c2f769d6d1..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/api/serial/serial_port_enumerator.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-#include "chrome/browser/extensions/api/serial/serial_port_enumerator.h"
-
-namespace extensions {
-
-// static
-bool SerialPortEnumerator::DoesPortExist(const StringSet& name_set,
-                                         const std::string& port_name) {
-  return name_set.count(port_name) == 1;
-}
-
-}  // namespace extensions