As per https://bugs.webkit.org/show_bug.cgi?id=92833 this test needs to be rebaselined on other platforms. While it's not mentioned in the bug Windows is also one of those platforms.
Ah that bugs says all ports, and it wasn't applied to mac either, so I guess I'll let it slide
:)
Created attachment 157829 [details] patch
Comment on attachment 157829 [details] patch Clearing flags on attachment: 157829 Committed r125345: <http://trac.webkit.org/changeset/125345>
All reviewed patches have been landed. Closing bug.