Re: Document .window.js tests. (#5132)

Notifying @dontcallmedom, @gsnedders, @sideshowbarker, and @zcorpan. *([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/5132#issuecomment-286216698

Received on Monday, 13 March 2017 19:27:46 UTC