There is another extension for this already, but it hooks in after the
page has already started loading - doing it on the URL change handler
is much faster.
Change-Id: I442552cbd8bb040df999a1624cafd436f4a7b875
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2430
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
