Convert ConnectToApplication to take a params class

sql/mojo/vfs_unittest.cc

Index: sql/mojo/vfs_unittest.cc
diff --git a/sql/mojo/vfs_unittest.cc b/sql/mojo/vfs_unittest.cc
index 33c6171f7cce4c0fc16e04324525ab201c7d7111..38de19290ac2d7861f77599ec5cd140e72f9204d 100644
--- a/sql/mojo/vfs_unittest.cc
+++ b/sql/mojo/vfs_unittest.cc
@@ -50,9 +50,7 @@ class VFSTest : public mojo::test::ApplicationTestBase,
   void SetUp() override {
     mojo::test::ApplicationTestBase::SetUp();
 
-    mojo::URLRequestPtr request(mojo::URLRequest::New());
-    request->url = mojo::String::From("mojo:filesystem");
-    application_impl()->ConnectToService(request.Pass(), &files_);
+    application_impl()->ConnectToService("mojo:filesystem", &files_);
 
     filesystem::FileSystemClientPtr client;
     binding_.Bind(GetProxy(&client));