First steps at getting the spectron/webdriver tests working

[bsclifton]

Tonite's progress. Brave crashes on shutdown which needs investigation

Feel free to merge (it's against chromium54) or keep it open as a WIP and I'll continue working on tests 😄

Auditors: @bridiver, @darkdh

[darkdh]

++ on c9f8030

[bsclifton]

@bridiver per your comment #5995 (comment)

I updated the code in js/flash.js to use the methods in lib/urlutil.js. Take a peek at the PR and if that looks good, this should be ready for merge (into chromium54 branch) 😄

[luixxiul]

Do we have an tracking issue for this? If not, please create one and add QA/no qa needed to it, thanks.

#5691

[bsclifton]

@luixxiul #5691 is the closest to tracking there is (which you already shared). Marking as QA/no qa needed because these are automated tests