It didn't work but I know why: I use a different browser for Facebook—not because of these hacks but because Facebook itself is more invasive than any of these tricks. I don't want to accidentally connect what I browser with Facebook. I have a separate browser icon that launches:
google-chrome --user-data-dir=/home/myaccount/.config/facebook-chrome
And that launches directly to Facebook. I keep Facebook stuff nicely contained in that browser. I mostly just follow links out of Facebook. The real Chrome never even knows that I'm on Facebook.