I made an eleventh hour change in my code from a set of booleans to a single enumerated value. I accidentally used an equality when I meant to use a not-equal.
Created attachment 226150 [details] Patch
Comment on attachment 226150 [details] Patch r=me
Committed r165280: <http://trac.webkit.org/changeset/165280>
<rdar://problem/16264624>