Import wpt@8f153b13f5edeff614d450a2e2669fd3befaa125

https://github.com/web-platform-tests/wpt/compare/f44b03aa8...8f153b13f

Using wpt-import in Chromium 80817054.
With Chromium commits locally applied on WPT:
  9d3f7590 "Event Timing: Treat Orphan Pointerup As Non-Interaction"
  c7bf05ba "Move _generate_expected_image out of _generate_test"
  2a990dc5 "Move test uniqueness check outside of _generate_test"
  c9990a87 "Centralize the template type resolution logic"
  23f9879c "Expand code macros in _finalize_frame"
  aa3ecb24 "Render variant code in _finalize_params"
  27dec5a4 "Encapsulate all code related to variants into a [...]
  e3746dd6 "Consolidate file writing boilerplate into the [...]
  fcbb3bcb "Group functions writing test files together"
  8942190c "Remove useless t.done() in worker promise tests"
  95658027 "Revert "Cross-origin support for [...]

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:
eae@chromium.org, szager@chromium.org:
  external/wpt/intersection-observer

NOAUTOREVERT=true

No-Export: true
Validate-Test-Flakiness: skip
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I29d6aff405d2a2f0224f37ea15ca8106de74115b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5421035


Auto-Submit: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Weizhong Xia <weizhong@google.com>
Reviewed-by: Weizhong Xia <weizhong@google.com>
Cr-Commit-Position: refs/heads/main@{#1282535}