Import wpt@159c7c2f98576d2288c12aee86264356cbaa1be1

Using wpt-import in Chromium b00478d52eb709a91205be4dad7a81ef45445d89.
With Chromium commits locally applied on WPT:
9e3affdd55 "Ship `referer` header length limitation."
3d4f72a808 "Worker: Add service worker interception tests for shared workers"
043af69d08 "WebSocket: stop removing an iframe in onerror from crashing"


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

Directory owners for changes in this CL:
foolip@chromium.org, lpz@chromium.org, robertma@chromium.org:
  external/wpt/tools
mkwst@chromium.org, andypaicu@chromium.org:
  external/wpt/content-security-policy

NOAUTOREVERT=true
TBR=lpz

No-Export: true
Change-Id: I816cfb41c30a266e20368e2f5f8e943b18e005d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1666368
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@{#670332}
12 files changed