GitLab

It's been over a year since modal permission prompts have been enabled
by default. The usage is now very low so it's time to removed them.
https://uma.googleplex.com/histograms?sid=19aaae5bcd78f725505eebc7e91172ce
Usage in stable less than 0.0003%

Bug: 935900
Change-Id: Ifecfacec485fc1a18fccbf7d219209d3727946b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1757939Reviewed-by: Peter Conn <peconn@chromium.org>
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#689420}