Re: [web-animations-tests] Tests for effect/keyframe composite(accumulate). (#4456)

Notifying @birtles. *([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/4456#issuecomment-270146446

Received on Tuesday, 3 January 2017 15:54:41 UTC