Import wpt@4150f9124cd8bce8b11ed79865099cab1530571e

https://github.com/web-platform-tests/wpt/compare/af83b77e2...4150f9124

Using wpt-import in Chromium 17216154eab69c5ea63ff944090ac027049aeb8b.
With Chromium commits locally applied on WPT:
  679cb25d08 "Revert "Topics: web platform tests for <img> request [...]
  85108efa6e "Fix cull rect update for clipped scroller"
  f0cab8e234 "[shared storage] Implement [...]

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:
bjonesbe@adobe.com:
  external/wpt/css/css-shapes
cbiesinger@chromium.org:
  external/wpt/css/css-flexbox
drott@chromium.org:
  external/wpt/css/css-text-decor
smcgruer@chromium.org:
  external/wpt/css/css-position

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

No-Export: true
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I1ce106d69937b1c3a712f83d81f8119ce707a198
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6139104
Auto-Submit: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1401722}