Would be nice to be able to set config options as you can with ChromeDriver: https://chromedriver.chromium.org/capabilities + the "config" capability. My use case is related to #5906 - I'd need to set the plugins.always_open_pdf_externally to true, so Chromeium does not use it's internal PDF viewer, so I could download a PDF, but I guess there a zillion other use cases when testing your web apps. Thanks.