GitLab

This is the fix to the issue highlighted at
https://chromium-review.googlesource.com/c/chromium/src/+/1938067

Anti-starvation on the UI/IO threads is highly problematic
per unexpected reorder of base::TaskPriority. BrowserTaskExecutors
already disables this. TaskEnvironment needs to do the same.

R=alexclarke@chromium.org

Bug: 1013535
Change-Id: Ief82ff8a80813455e60bb6ed53fdb23228f68f7a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1948093
Auto-Submit: Gabriel Charette <gab@chromium.org>
Commit-Queue: Alex Clarke <alexclarke@chromium.org>
Reviewed-by: Alex Clarke <alexclarke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721400}