REGRESSION(249934@main): Captions fail to load on ESPN.com
<rdar://problem/104493270>
Pull request: https://github.com/WebKit/WebKit/pull/9470
Committed 259781@main (cc2a0b3996b2): <https://commits.webkit.org/259781@main> Reviewed commits have been landed. Closing PR #9470 and removing active labels.