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..9b6cfc4aa796663a972905eab85cf704d841e822 100644
--- a/content/test/data/web_ui_mojo_shell_test.js
+++ b/content/test/data/web_ui_mojo_shell_test.js
@@ -30,15 +30,18 @@ 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,
-        function (services) {
-          var test = connectToService(services, testMojom.TestMojoService);
-          test.getRequestorURL().then(function(response) {
-            domAutomationController.send(
-                response.url == 'chrome://mojo-web-ui/');
-          });
-        },
-        function (exposedServices) {},
-        new shellMojom.CapabilityFilter({ filter: new Map([["*", ["*"]]]) }));
+    shell.getConnector(function(connector) {
+      connector.connect(TEST_APP_URL, 1,
+          function (services) {
+            var test = connectToService(services, testMojom.TestMojoService);
+            test.getRequestorURL().then(function (response) {
+              domAutomationController.send(
+                  response.url == 'chrome://mojo-web-ui/');
+            });
+          },
+          function (exposedServices) { },
+          new shellMojom.CapabilityFilter({ filter: new Map([["*", ["*"]]]) }));
+      });
+    });
   };
 });