See parent task
Codesearch for `userCan` calls: https://codesearch.wmflabs.org/deployed/?q=-%3EuserCan%5C(&i=nope&files=php%24&repos=
These need to be checked for if they are called on a title method
#### Calls to Title::userCan:
* [] From core
** Title::quickUserCan
** TitlePermissionTest (lots)
** TitleTest::testWgWhitelistReadRegexp
* [] From FlaggedRevs https://gerrit.wikimedia.org/r/c/572030
** RevisionReviewForm::isAllowed
* [] From MassMessage https://gerrit.wikimedia.org/r/c/572073
** SpecialCreateMassMessageList::onSubmit
** SpecialEditMassMessageList::setParameter
* [] From Translate https://gerrit.wikimedia.org/r/c/572075
** PageTranslationTaggingTest::testTranslationPageRestrictions
** TranslateSandboxTest::testPermissions
* [] From GettingStarted https://gerrit.wikimedia.org/r/c/571875
** BasePageFilter::isAllowedPage
* [x] From Jade: https://gerrit.wikimedia.org/r/c/572029
** PageEntityProposalSetStorage::storeProposalSet
* [] From LiquidThreads https://gerrit.wikimedia.org/r/c/571874
** Thread::canUserCreateThreads
* [] From SubPageList3 https://gerrit.wikimedia.org/r/c/571873
** SubPageList3::getTitles
All other callers from mediawiki deployed code refer to a different userCan (eg PermissionManager::userCan)