Implement _WKWebAuthenticationPanel SPI.
<rdar://problem/55932094>
Created attachment 380191 [details] Patch
Created attachment 380196 [details] Patch
Created attachment 380201 [details] Patch
Comment on attachment 380201 [details] Patch Looks good. Thank you for writing tests!
Comment on attachment 380201 [details] Patch Thanks, Brent.
Comment on attachment 380201 [details] Patch Clearing flags on attachment: 380201 Committed r250729: <https://trac.webkit.org/changeset/250729>
All reviewed patches have been landed. Closing bug.
A build fix is landed: Committed r250751: <https://trac.webkit.org/changeset/250751>
Another build fix is needed for the use of API::WebAuthenticationPanel in _WKWebAuthenticationPanelInternal.h
Never mind. I think Jiewen's build fix was sufficient.