Alex's Example

options = {
  # these are options for Selenium gem
  selenium: {
    proxy: [Billy.proxy.host, Billy.proxy.port].join(':'),
    http_client: Features::Helpers::RetryingHttpClient.new,
    listener: event_listener,
  }
  # these are options for ChromeDriver
  driver: {
    args: %w[--disable-translate],
    detach: false,
    log: "log/chromedriver#{ENV['TEST_ENV_NUMBER']}.log"
    prefs: {
      download: {
        prompt_for_download: false,
        default_directory: '~/Downloads/'
      }
    },
  },
  # these are options for Chrome
  browser: {
    'chromeOptions' => {
      'localState' => {
        'protocol_handler' => {
          'excluded_schemes' => {
            'skype' => false # disable external protocol popups for `skype:' links
          }
        }
      }
    }
  }
}
browser = Watir::Browser.new(:chrome, options)

would then become:

options = {
  http_client: Watir::HttpClient.new {
      retries: 3, 
      proxy: [Billy.proxy.host, Billy.proxy.port].join(':'))
    },
  listener: event_listener
  driver_opts: {
    args: %w[--disable-translate], 
    log: "log/chromedriver#{ENV['TEST_ENV_NUMBER']}.log"
  }
  browser_opts: {
    detach: false, 
    local_state: {
      protocol_handler: {
        excluded_schemes: {
          skype: false # disable external protocol popups for `skype:' links
        }
      }
    },
    prefs: {
      download: {
        prompt_for_download: false,
        default_directory: '~/Downloads/'
      }
    }
  }
}
browser = Watir::Browser.new(:chrome, options)