Captions continue to render after their end time if there are no cues at all for the current time.
<rdar://problem/10601950>
Created attachment 119893 [details] Proposed patch
Comment on attachment 119893 [details] Proposed patch Attachment 119893 [details] did not pass chromium-ews (chromium-xvfb): Output: http://queues.webkit.org/results/10915029 New failing tests: media/track/track-cue-nothing-to-render.html
http://trac.webkit.org/changeset/103371
I can't figure out why the new test failed on the Linux bot, will watch the builders and fix or skip it.
Plus http://trac.webkit.org/changeset/103386 to fix the cr build.