Import wpt@6d0abd546a00f8d7e21ae7dfe82220357312a430

https://github.com/web-platform-tests/wpt/compare/300b261f0...6d0abd546

Using wpt-import in Chromium 5a21b7f8.

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:
jsbell@chromium.org:
  external/wpt/resources
mustaq@chromium.org:
  external/wpt/html/interaction/focus

NOAUTOREVERT=true
R=rubber-stamper@appspot.gserviceaccount.com

No-Export: true
Validate-Test-Flakiness: skip
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I194798c7546f45d847aa41f2e504d2bbbc2e51b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5464346
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1289502}