Convert ConnectToApplication to take a params class

components/html_viewer/html_widget.cc

Index: components/html_viewer/html_widget.cc
diff --git a/components/html_viewer/html_widget.cc b/components/html_viewer/html_widget.cc
index 5a60d3e6e2622e68724d95975c770da4feb50e8e..a7515cec0b7f9989af310b0d1b1e3d5d7360ca55 100644
--- a/components/html_viewer/html_widget.cc
+++ b/components/html_viewer/html_widget.cc
@@ -35,10 +35,8 @@ void InitializeWebLayerTreeView(WebLayerTreeViewImpl* web_layer_tree_view,
                                 mus::Window* window,
                                 blink::WebWidget* widget) {
   DCHECK(window);
-  mojo::URLRequestPtr request(mojo::URLRequest::New());
-  request->url = mojo::String::From("mojo:mus");
   mus::mojom::GpuPtr gpu_service;
-  app->ConnectToService(request.Pass(), &gpu_service);
+  app->ConnectToService("mojo:mus", &gpu_service);
   web_layer_tree_view->Initialize(gpu_service.Pass(), window, widget);
 }