Import wpt@b839367eb159061429bdd109e95df56539362451

https://github.com/web-platform-tests/wpt/compare/5dd58a3d8...b839367eb

Using wpt-import in Chromium 2a8a56932d9790375a5d29421e845cf7647cf976.
With Chromium commits locally applied on WPT:
  cfa4198e9a "Add extra synchronization to test."

Note to gardeners: This CL imports external tests and adds expectations
for those tests; if this CL is large and causes a few new failures,
please fix the failures by adding new lines to TestExpectations rather
than reverting. See:
https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md

Directory owners for changes in this CL:
bokan@chromium.org:
  external/wpt/scroll-to-text-fragment
cbiesinger@chromium.org:
  external/wpt/css/css-sizing
dgrogan@chromium.org:
  external/wpt/css/css-tables
meade@chromium.org:
  external/wpt/web-animations
skobes@chromium.org:
  external/wpt/css/css-scroll-anchoring

NOAUTOREVERT=true

No-Export: true
Validate-Test-Flakiness: skip
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I40d2f01596eeee48a911b6912aa0f6921ffc2768
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5735743
Reviewed-by: An Sung <ansung@google.com>
Auto-Submit: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Jonathan Lee <jonathanjlee@google.com>
Cr-Commit-Position: refs/heads/main@{#1333052}