Allow client process information to be passed via Connector::Connect().

content/test/data/web_ui_mojo_shell_test.js

 // Copyright 2015 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.
 
 
 /**
  * This URL is defined in content/public/test/test_mojo_app.cc. It identifies
  * content_shell's out-of-process Mojo test app.
  */
 var TEST_APP_URL = 'system:content_mojo_test';
@@ skipping 29 matching lines @@
     identity.instance = "";
     connector.connect(
         identity,
         function (services) {
           var test = connectToService(services, testMojom.TestMojoService);
           test.getRequestorName().then(function(response) {
             domAutomationController.send(
                 response.name == 'chrome://mojo-web-ui/');
           });
         },
-        function (exposedServices) {});
+        function (exposedServices) {},
+        null);
   };
 });