Use udev for serial device enumeration on Linux

chrome/common/extensions/api/serial.idl

 // 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.
 
 // Use the <code>chrome.serial</code> API to read from and write to a device
 // connected to a serial port.
 namespace serial {
 
   dictionary DeviceInfo {
     // The device's system path. This should be passed as the <code>path</code>
     // argument to <code>chrome.serial.connect</code> in order to connect to
     // this device.
     DOMString path;
+
+    // A PCI or USB vendor ID if one can be determined for the underlying
+    // device.
+    long? vendorId;
+
+    // A USB product ID if one can be determined for the underlying device.
+    long? productId;
+
+    // A human-readable display name for the underlying device if one can be
+    // queried from the host driver.
+    DOMString? displayName;
   };
 
   callback GetDevicesCallback = void (DeviceInfo[] ports);
 
   enum DataBits { seven, eight };
   enum ParityBit { no, odd, even };
   enum StopBits { one, two };
 
   dictionary ConnectionOptions {
     // Flag indicating whether or not the connection should be left open when
@@ skipping 279 matching lines @@
     // |info| : Event data.
     static void onReceive(ReceiveInfo info);
 
     // Event raised when an error occurred while the runtime was waiting for
     // data on the serial port. Once this event is raised, the connection may be
     // set to <code>paused</code>. A <code>"timeout"</code> error does not pause
     // the connection.
     static void onReceiveError(ReceiveErrorInfo info);
   };
 };