Convert ConnectToApplication to take a params class

mojo/shell/application_manager_apptest_driver.cc

Index: mojo/shell/application_manager_apptest_driver.cc
diff --git a/mojo/shell/application_manager_apptest_driver.cc b/mojo/shell/application_manager_apptest_driver.cc
index 51766ccb6ea585632ee330e80255cc3cccd6583e..290fc32516f8eaad3e6ca489c506fdea3dce674d 100644
--- a/mojo/shell/application_manager_apptest_driver.cc
+++ b/mojo/shell/application_manager_apptest_driver.cc
@@ -43,8 +43,7 @@ class TargetApplicationDelegate : public mojo::ApplicationDelegate,
   void Initialize(mojo::ApplicationImpl* app) override {
     app_ = app;
     mojo::shell::mojom::ApplicationManagerPtr application_manager;
-    app_->ConnectToService(mojo::URLRequest::From(std::string("mojo:shell")),
-                           &application_manager);
+    app_->ConnectToService("mojo:shell", &application_manager);
 
     base::FilePath target_path;
     CHECK(base::PathService::Get(base::DIR_EXE, &target_path));