THIS. I have 8 years of open source work in bugzilla and github. If companies really give a shit, they would review code you already wrote and ask questions about your body of work. Not some arbitrary test.
The history of Google's "SafeBrowsing" with respect to Firefox is a real mixed bag. The privacy protections Mozilla asked for from Google were begrudgingly implemented. As a Linux user, I used to just turn it off.