Add NetworkingPrivateDelegate class

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;
 
 // Test properties for the verification API.
 var verificationProperties = {
   "certificate": "certificate",
-  "publicKey": "public_key",
+  "publicKey": "cHVibGljX2tleQ==",  // Base64("public_key")
   "nonce": "nonce",
-  "signedData": "signed_data",
+  "signedData": "c2lnbmVkX2RhdGE=",  // Base64("signed_data")
   "deviceSerial": "device_serial",
   "deviceSsid": "Device 0123",
   "deviceBssid": "00:01:02:03:04:05"
 };
 
 var privateHelpers = {
   // Watches for the states |expectedStates| in reverse order. If all states
   // were observed in the right order, succeeds and calls |done|. If any
   // unexpected state is observed, fails.
   watchForStateChanges: function(network, expectedStates, done) {
@@ skipping 481 matching lines @@
         new privateHelpers.watchForCaptivePortalState(
             'wifi_guid', 'Online', done);
     chrome.test.sendMessage('notifyPortalDetectorObservers');
   },
 ];
 
 var testToRun = window.location.search.substring(1);
 chrome.test.runTests(availableTests.filter(function(op) {
   return op.name == testToRun;
 }));