Import wpt@d281c718c65699764f30269e3a0243f80f2174c4

Using wpt-import in Chromium 983ac9e5.
With Chromium commits locally applied on WPT:
b987e8fd "Implement container-progress() function"
ca785e88 "[bfcache] Report null when iframes' atrributes are null"



Note to sheriffs: 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:
ericwilligers@chromium.org:
  external/wpt/css/motion
estade@chromium.org, asully@chromium.org, ayui@chromium.org, garykac@chromium.org, jsbell@chromium.org:
  external/wpt/clipboard-apis
futhark@chromium.org, andruud@chromium.org:
  external/wpt/css/css-cascade
hongchan@chromium.org, mjwilson@chromium.org, alvinji@chromium.org, sinafirooz@chromium.org:
  external/wpt/webaudio
vogelheim@chromium.org:
  external/wpt/trusted-types

NOAUTOREVERT=true

No-Export: true
Validate-Test-Flakiness: skip
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I96e62f8a106ca81bc372712da49877cf3f2384fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5403167


Reviewed-by: Jonathan Lee <jonathanjlee@google.com>
Commit-Queue: Weizhong Xia <weizhong@google.com>
Cr-Commit-Position: refs/heads/main@{#1280301}