Add a instance groups to Connect(), and introduce an Identity struct.

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 ab0661d54c1cbb0cad2bb2927dc21f72fd14104c..b43a4f4c1ce74d6e2a61f7156704082718578a6c 100644
--- a/content/test/data/web_ui_mojo_shell_test.js
+++ b/content/test/data/web_ui_mojo_shell_test.js
@@ -34,8 +34,12 @@ define('main', [
     var connector = new connectorMojom.Connector.proxyClass(
         new router.Router(connectorPipe));
 
+    var identity = {};
+    identity.name = TEST_APP_URL;
+    identity.user_id = connectorMojom.kInheritUserID;
+    identity.instance = "";
     connector.connect(
-        TEST_APP_URL, connectorMojom.kInheritUserID,
+        identity,
         function (services) {
           var test = connectToService(services, testMojom.TestMojoService);
           test.getRequestorName().then(function(response) {