Polymer/web-component-tester — pull request #92 by garlicnation (2014-12-03 00:22:38+00:00)
Title: Fix case of FakeXHR when sending a FormData payload.

There's a pull request in Sinon.JS to fix this upstream, but I've got tests that won't pass without the fix. https://github.com/cjohansen/Sinon.JS/pull/618