Re: [service-workers-tests][web-animations-tests][workers-tests] Tidy up visibility tests to use single quotes and drop periods at end of test assertions; (#4843)

Code reviewed upstream.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4843#issuecomment-280148632

Received on Wednesday, 15 February 2017 21:42:13 UTC