rdar://79669807
Created attachment 432867 [details] For EWS
Created attachment 432949 [details] Use WTF::String instead of NSString
(Over Slack, Tim recommended using WTF::String's functionality instead of NSString).
Committed r279609 (239431@main): <https://commits.webkit.org/239431@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 432949 [details].