The discussion in W3C Privacy CG decided that we should use distinct well-known URL paths for websites triggering attribution and for the browser reporting attribution (https://github.com/privacycg/private-click-measurement/issues/59):
Created attachment 418242 [details]
Created attachment 418244 [details]
Fixed the iOS API test.
Comment on attachment 418244 [details]
Committed r271799: <https://trac.webkit.org/changeset/271799>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 418244 [details].