Web Animations CSS: Update virtual/threaded failures
Web Animations CSS: Update virtual/threaded failures

TBR=steveblock
NOTRY=true
BUG=322272

Review URL: https://codereview.chromium.org/83153003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@162534 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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