Add ethernet to ONC validation and Shill translation.

chrome/test/data/extensions/api_test/networking/test.js

 // Copyright (c) 2013 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.
 
 var callbackPass = chrome.test.callbackPass;
 var callbackFail = chrome.test.callbackFail;
 var assertTrue = chrome.test.assertTrue;
 var assertFalse = chrome.test.assertFalse;
 var assertEq = chrome.test.assertEq;
 
@@ skipping 97 matching lines @@
       }));
   },
   function getVisibleNetworks() {
     chrome.networkingPrivate.getVisibleNetworks(
       "All",
       callbackPass(function(result) {
         assertEq([{
                     "ConnectionState": "Connected",
                     "GUID": "stub_ethernet",
                     "Name": "eth0",
-                    "Type": "Ethernet"
+                    "Type": "Ethernet",
+                    "Ethernet": {
+                      "Authentication": "None"
+                    }
                   },
                   {
                     "ConnectionState": "Connected",
                     "GUID": "stub_wifi1",
                     "Name": "wifi1",
                     "Type": "WiFi",
                     "WiFi": {
                       "Security": "WEP-PSK",
                       "SignalStrength": 0
                     }
@@ skipping 234 matching lines @@
       callbackPass(function(result) {
         assertEq("encrypted_data", result);
       }));
   }
 ];
 
 var testToRun = window.location.search.substring(1);
 chrome.test.runTests(availableTests.filter(function(op) {
   return op.name == testToRun;
 }));