Hyatt doesn't like the fix in bug #61911, <http://trac.webkit.org/changeset/88468>, and suggested a different way of achieving the same effect.
Created attachment 96634 [details]
Comment on attachment 96634 [details]
r=me! Thanks for the quick turnaround!
http://jerryseinfeld.com/ content still appears fixed with this patch. No major regressions found on apple.com content, vimeo.com content, or embedded vimeo.com videos.
Committed r88505: <http://trac.webkit.org/changeset/88505>