Import wpt@2f30517e7efd7cab3b283c8aeb98f7f50149e207

https://github.com/web-platform-tests/wpt/compare/cab88353d...2f30517e7

Using wpt-import in Chromium fe61b249abb058d9c71dbb3516946f5198b0ccea.
With Chromium commits locally applied on WPT:
  f7afd40fcb "Better control of breaks before trailing decorations."
  cbe34731e4 "Re-reland "Minimize content type in resource timing""

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

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: I5ee1ae2f00624cb0f51f659b1ecfc829870aa64d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5813829
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@{#1347074}