Convert ConnectToApplication to take a params class

mandoline/ui/desktop_ui/browser_apptest.cc

Index: mandoline/ui/desktop_ui/browser_apptest.cc
diff --git a/mandoline/ui/desktop_ui/browser_apptest.cc b/mandoline/ui/desktop_ui/browser_apptest.cc
index 5f847cecc057ab939de2f83c109a3816be609d7c..1673cde972d8ec04d0cfbb9137b5afe2b4bbc1c1 100644
--- a/mandoline/ui/desktop_ui/browser_apptest.cc
+++ b/mandoline/ui/desktop_ui/browser_apptest.cc
@@ -16,9 +16,7 @@ class BrowserTest : public mojo::test::ApplicationTestBase {
   // mojo::test::ApplicationTestBase:
   void SetUp() override {
     mojo::test::ApplicationTestBase::SetUp();
-    mojo::URLRequestPtr request(mojo::URLRequest::New());
-    request->url = mojo::String::From("mojo:desktop_ui");
-    application_impl()->ConnectToService(request.Pass(), &launch_handler_);
+    application_impl()->ConnectToService("mojo:desktop_ui", &launch_handler_);
     ASSERT_TRUE(launch_handler_.is_bound());
   }