Import wpt@b2d43d1fad90cccfd3e61bffcf1cbbcdac18a979

Using wpt-import in Chromium f007b805d8e151c9ab271bd40febe44647275797.
With Chromium commits locally applied on WPT:
e90c6ef049 "NG/DL: Implement size containment (and display lock) for NG fieldset algo"
be76d09eb7 "[ServiceWorker] Reject update() from within installing workers"
abf2ac5e22 "webrtc wpt: avoid race conditions"
d9a6ec054d "[MediaStreamTrack] Remove tests and existing support for the 'volume' property."


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/+/master/docs/testing/web_platform_tests.md

NOAUTOREVERT=true
TBR=raphael.kubo.da.costa

No-Export: true
Change-Id: I0975df8620e1e6f77bfde48f69e194fce8484758
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1634789
Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#664210}