Import wpt@3b0abc897b6f4f3997ed42b9ef902e98b2893d8d

Using wpt-import in Chromium 9a9b2ae55f6b5de259deae781c20fdc9419abe7b.

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:
hbos@chromium.org, hta@chromium.org:
  external/wpt/webrtc

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: I8e734b102a380e0bf951b1cd523d8f420ed9378f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1537567
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@{#643728}
10 files changed