Re: [web-animations-tests] Small clean up of playbackRate.html (#2939)

The null changes are definitely good. We shouldn't change the playbackRate behavior however unless we decide to change the spec.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/2939#issuecomment-216760637

Received on Wednesday, 4 May 2016 06:53:56 UTC