Update message filters in the WebContent sandbox on iOS with required messages.
<rdar://problem/61737140>
Created attachment 396330 [details] Patch
Comment on attachment 396330 [details] Patch r=me
Comment on attachment 396330 [details] Patch Thanks for reviewing!
Committed r260041: <https://trac.webkit.org/changeset/260041> All reviewed patches have been landed. Closing bug and clearing flags on attachment 396330 [details].