Due to a Core Media issue, the test at media/track/track-in-band-cues-added-once.html consistently fails on Mac. This bug tracks no longer skipping this issue once the blocking issue is fixed.
<rdar://problem/12916499>
The test is expected as a Failure as of http://trac.webkit.org/changeset/138238.
*** This bug has been marked as a duplicate of bug 103663 ***