RELEASE_ASSERT in CaptionUserPreferencesMediaAF::CaptionUserPreferencesMediaAF() when MediaToolbox.framework missing
<rdar://problem/39007591>
Created attachment 337032 [details] Patch
Created attachment 337034 [details] Patch for landing
Created attachment 337195 [details] Patch for landing
Comment on attachment 337195 [details] Patch for landing Clearing flags on attachment: 337195 Committed r230272: <https://trac.webkit.org/changeset/230272>
All reviewed patches have been landed. Closing bug.