[WebAuthn] Remove user gesture requirement for mediation=conditional assertions

[[e-mail]]

Conditional assertions are non-modal and already require a gesture to complete via
a different mechanism. So if conditional mediation is available on the platform and
requested, we should not require a gesture.

[[e-mail]]

rdar://92137603

[[e-mail]]

Created attachment 458756 [details]
Patch

[Brent Fulgham]

Comment on attachment 458756 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=458756&action=review

r=me, but please check the cause of the debug failure.

> Source/WebKit/UIProcess/WebAuthentication/Cocoa/WebAuthenticatorCoordinatorProxy.mm:326
> +            requestContext.get().requestStyle = ASCredentialRequestStyleAutoFill;

Nit: I'd prefer to check and do an early return if it does NOT respond to the selector, rather than this form. It's slightly easier to read and a little more concise.

> Source/WebKit/UIProcess/WebAuthentication/WebAuthenticatorCoordinatorProxy.cpp:110
> +    if (!data.processingUserGesture && !m_webPageProxy.websiteDataStore().authenticatorManager().isVirtual() && data.mediation != MediationRequirement::Conditional)

Nit: It might be slightly more efficient to test the 'data.mediation' condition before retrieving the websiteDataStore->authenticator and calling its isVirtual method.

[[e-mail]]

Created attachment 458758 [details]
Patch for landing

[EWS]

ChangeLog entry in Source/WebKit/ChangeLog contains OOPS!.

[[e-mail]]

Created attachment 458812 [details]
Patch for landing

[EWS]

Committed r293786 (250265@main): <https://commits.webkit.org/250265@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 458812 [details].