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)

Notifying @Ms2ger, @birtles, @caitp, @chunywang, @ehsan, @jdm, @mkruisselbrink, @zcorpan, and @zqzhang. *([Learn how reviewing works](https://github.com/w3c/web-platform-tests/blob/master/README.md#test-review).)*

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4843#issuecomment-280148643

Received on Wednesday, 15 February 2017 21:42:11 UTC