getWebsiteDataAccessAllowed
Get whether @itp_first_party has granted website data access to its #WebKitITPThirdParty.
Each @WebKitITPFirstParty is created by webkit_itp_third_party_get_first_parties() and therefore corresponds to exactly one #WebKitITPThirdParty.
Return
true if website data access has been granted, or false otherwise
Since
2.30