[upgrade-insecure-requests-tests] Basic tests for Upgrade-Insecure-Requests. (#4282)

@foolip: Mind taking a look? These all pass in Firefox, and I'm working on making them pass in Chrome.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4282

Received on Monday, 5 December 2016 15:31:45 UTC