r51671 probably broke the tests in question. According to Brian Weinstein, Gavin knows about the problem, so I've just assigned it to you :-)
Adding those tests to the skipped list soon.
fast/js/math.html is also affected. Skipping it soon, as well.
*** This bug has been marked as a duplicate of bug 32158 ***
Created attachment 44586 [details]
style-queue ran check-webkit-style on attachment 44586 [details] without any errors.
Comment on attachment 44586 [details]