UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.76 Safari/537.36

Steps to reproduce the problem:
1. Add a <link rel="stylesheet"> tag to a page with a correct "integrity" attribute.
2. Load the page and check the network tab.
3. See that the stylesheet is downloaded twice.

What is the expected behavior?
The resource should only be requested once.

What went wrong?
Chrome requests the resource twice even if the first request results in a successful download of the resource.

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 56.0.2924.76  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 24.0 r0

See a live example here: https://hijinkslife.com/NYC
The `font-awesome.min.css` file is downloaded twice even though the page only has one <link> for that stylesheet.

This bug is related to a similar bug for script tags (which was fixed a year ago): https://bugs.chromium.org/p/chromium/issues/detail?id=573269#