Convert ConnectToApplication to take a params class

mojo/services/test_service/test_time_service_impl.cc

Index: mojo/services/test_service/test_time_service_impl.cc
diff --git a/mojo/services/test_service/test_time_service_impl.cc b/mojo/services/test_service/test_time_service_impl.cc
index 5dc90f79aa5c393573b548fc5feb01a009f90998..ae26a8ea57d5bbb1c363b4b31882668b1e251cce 100644
--- a/mojo/services/test_service/test_time_service_impl.cc
+++ b/mojo/services/test_service/test_time_service_impl.cc
@@ -23,9 +23,7 @@ TestTimeServiceImpl::~TestTimeServiceImpl() {
 void TestTimeServiceImpl::StartTrackingRequests(
     const mojo::Callback<void()>& callback) {
   TestRequestTrackerPtr tracker;
-  mojo::URLRequestPtr request(mojo::URLRequest::New());
-  request->url = mojo::String::From("mojo:test_request_tracker_app");
-  app_impl_->ConnectToService(request.Pass(), &tracker);
+  app_impl_->ConnectToService("mojo:test_request_tracker_app", &tracker);
   tracking_.reset(new TrackedService(tracker.Pass(), Name_, callback));
 }