GitLab

Sync w/ https://github.com/whatwg/html/pull/3047

Bug: 1144403
Change-Id: I67694714ee5799e2e731b4d0534a7c182871fc23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2574533Reviewed-by: Shengfa Lin <shengfa@google.com>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836007}