Re: [streams-tests] Update WritableStream tests (#5101)

Notifying @calvaris, @domenic, @ricea, @wanderview, @youennf, and @yutakahirano. *([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/5101#issuecomment-285286479

Received on Thursday, 9 March 2017 08:27:50 UTC