Use udev for serial device enumeration on Linux

chrome/common/extensions/api/serial.idl

Index: chrome/common/extensions/api/serial.idl
diff --git a/chrome/common/extensions/api/serial.idl b/chrome/common/extensions/api/serial.idl
index fff23bc2ad59a6b02ba8147be9bc71850f11e983..934c4e8ba1be88ad3298c6663663a28db549f1b6 100644
--- a/chrome/common/extensions/api/serial.idl
+++ b/chrome/common/extensions/api/serial.idl
@@ -11,6 +11,20 @@ namespace serial {
     // 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; zero otherwise. This field may only be present in Chrome 34 or
+    // higher.
+    long vendorId;
+
+    // A USB product ID if one can be determined for the underlying device;
+    // zero otherwise. This field may only be present in Chrome 34 or higher.
+    long productId;
+
+    // A human-readable display name for the underlying device if one can be
+    // queried from the host driver; empty otherwise. This field may only be
+    // present in Chrome 34 or higher.
+    DOMString displayName;
   };
 
   callback GetDevicesCallback = void (DeviceInfo[] ports);