Forces headless mode for Chrome

[jeffposnick]

As discussed.

This seems to work, but it's entirely possible that this should be optional, or implemented in a different subclass of the Chrome config or something. Feel free to tell me I'm doing it wrong 😄

[ebidel]

FWIW, there are still bugs with using Selenium with headless atm. Not sure if want to default to it just yet.

[jeffposnick]

Could you pass along the links to any showstoppers that we could Star and keep tabs on?

[ebidel]

This is the master bug: https://bugs.chromium.org/p/chromium/issues/detail?id=604324

There's a doc in there with a list of things that are missing. A major one is screenshots don't work yet.

[jeffposnick]

Thanks for that context! None of the issues in the doc seem relevant to the projects I use selenium-assistant for, but I guess there are other folks out there using it for different testing scenarios that might be impacted.

I'll defer to @gauntface as to whether this is something he'd like to see on by default. If not, perhaps there's an alternative solution for end-user configuration that would also fix #90 at the same time.

[gauntface]

This should be optional.

[gauntface]

Is this not possible by getting the selenium options and adding the flag there?

https://googlechrome.github.io/selenium-assistant/reference-docs/stable/v5.0.5/LocalBrowser.html#getSeleniumOptions

If so, it would be better to just add a new doc page to cover how it can be done.

[gauntface]

Closed in favor #97