Chrome launch arguments

Chrome supports a variety of launch arguments/flags/switches, here are a few references:

• https://peter.sh/experiments/chromium-command-line-switches/
• https://github.com/GoogleChrome/chrome-launcher/blob/master/docs/chrome-flags-for-tools.md
• https://niek.github.io/chrome-features/

Hide while still being headful

Useful when you can't use Xvfb. --window-position=-10000,10000