Import wpt@9f428424dacec4acfc312887048dadf7208f5186

Using wpt-import in Chromium e146d8b7e5e22907955613ab4aad22424653b882.
With Chromium commits locally applied on WPT:
329c91e5a1 "Attempt to make test more stable"

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:


No-Export: true
Change-Id: I02f183e3b2a930f92f91ac221ce1b62450a16ef2
Reviewed-by: WPT Autoroller <>
Commit-Queue: WPT Autoroller <>
Cr-Commit-Position: refs/heads/master@{#685894}
5 files changed