This issue is part of an effort to improve Servo's embedding story. See https://github.com/paulrouget/servoshell/projects/2

Starting Servo from a third party application requires setting the initial URL as an option:

let mut opts = opts::default_opts();
opts.url = ServoUrl::parse(url).ok();
opts::set_defaults(opts);

I would expect to be able to do that instead:

servo::Browser::new(window, url);