Following the fix for bug #177917, DOMHTMLElement no longer needs to be annotated as conforming to UITextInputTraits protocol. It never really did implement that protocol. When it was annotated as implementing the UITextInputTraits protocol it was only to register with the runtime so that callers could send -acceptsAutofilledLoginCredentials and -representingPageURL messages to it. And those functions were removed in the patch for bug bug #177917.
FYI, patch for bug #174394 first annotated DOMHTMLElement as implementing the UITextInputTraits protocol
Created attachment 384080 [details]
Comment on attachment 384080 [details]
Clearing flags on attachment: 384080
Committed r252746: <https://trac.webkit.org/changeset/252746>
All reviewed patches have been landed. Closing bug.