Ensure there is a Network process connection when initializing the WebContent process. The Network process is needed to provide the Launch Services database.
Created attachment 455101 [details] Patch
Created attachment 455129 [details] Patch
Created attachment 455173 [details] Patch
<rdar://problem/90528436>
<rdar://88933565>
Created attachment 455271 [details] Patch
Thanks for reviewing!
Committed r291620 (248713@main): <https://commits.webkit.org/248713@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 455271 [details].