Extract a Connector interface from Shell that can be cloned & passed to other threads

content/test/data/web_ui_mojo_shell_test.js

Index: content/test/data/web_ui_mojo_shell_test.js
diff --git a/content/test/data/web_ui_mojo_shell_test.js b/content/test/data/web_ui_mojo_shell_test.js
index 68f95ebf13959e56fb484daa3a9cdb8aa2d7c73b..b9083507ea61842ece20f17f9d518e73678b5756 100644
--- a/content/test/data/web_ui_mojo_shell_test.js
+++ b/content/test/data/web_ui_mojo_shell_test.js
@@ -30,7 +30,14 @@ define('main', [
     domAutomationController.setAutomationId(0);
     var shellPipe = serviceRegistry.connectToService(shellMojom.Shell.name);
     var shell = new shellMojom.Shell.proxyClass(new router.Router(shellPipe));
-    shell.connect(TEST_APP_URL, 1,
+
+    var pipe = core.createMessagePipe();
+    var connector =
+        new shellMojom.Connector.proxyClass(new router.Router(pipe.handle0));
+    shell.getConnector(pipe.handle1);
+
+    connector.connect(
+        TEST_APP_URL, 1,
         function (services) {
           var test = connectToService(services, testMojom.TestMojoService);
           test.getRequestorURL().then(function(response) {