Re: [XMLHttpRequest-tests] Ensure that we don't replace load popup. (#4458)

Notifying @Manishearth, @Ms2ger, @caitp, @emilio, @hallvors, @ibelem, @jdm, @jungkees, @kangxu, @mathiasbynens, and @ronkorving. *([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/4458#issuecomment-270146637

Received on Tuesday, 3 January 2017 15:55:20 UTC