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..3e22e7b8e11526754192ae0fb72c89dd074d855c 100644
--- a/chrome/common/extensions/api/serial.idl
+++ b/chrome/common/extensions/api/serial.idl
@@ -11,6 +11,18 @@ 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.

[scheib, 2014/02/10 23:37:52]

Indicate in what Chrome version these become available, or just that they must
be feature detected as they were added later. File an issue to clean up doc
later after API is stable again.

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

Should these fields be optional instead of using default values?

+    long vendorId;
+
+    // A USB product ID if one can be determined for the underlying device.
+    // Zero otherwise.
+    long productId;
+
+    // A human-readable display name for the underlying device if one can be
+    // queried from the host driver. Empty otherwise.
+    DOMString displayName;
   };
 
   callback GetDevicesCallback = void (DeviceInfo[] ports);