Strengthen updating/removing of registrations from the database
<rdar://problem/51891395>
Created attachment 373394 [details] Patch
Created attachment 373401 [details] Patch
Created attachment 373405 [details] Patch
Comment on attachment 373405 [details] Patch Clearing flags on attachment: 373405 Committed r247104: <https://trac.webkit.org/changeset/247104>
All reviewed patches have been landed. Closing bug.