This is needed as maniphest.update and maniphest.info is deprecated and can be removed at any time.
We need migrate maniphest.update to maniphest.edit and maniphest.info to maniphest.search + any other calls which i haven't found yet.
We need to also migrate project.query to project.search.
Im setting this as high priority as it is harder to upgrade gerrit then it is phabricator (i would like to get this done before gerrit 2.14 is branched or before we update to it)