Re: [fetch-tests] Reflect HeadersInit changes (#4240)

Notifying @jdm and @youennf. *([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/4240#issuecomment-262599331

Received on Wednesday, 23 November 2016 18:45:47 UTC