public static function addToFileHistLine($hist, File $file, &$s, &$rowClass)
 {
     if (!$file->isVisible()) {
         return true;
         // Don't bother showing notice for deleted revs
     }
     # Quality level for old versions selected all at once.
     # Commons queries cannot be done all at once...
     if (!$file->isOld() || !$file->isLocal()) {
         $dbr = wfGetDB(DB_SLAVE);
         $quality = $dbr->selectField('flaggedrevs', 'fr_quality', array('fr_img_sha1' => $file->getSha1(), 'fr_img_timestamp' => $dbr->timestamp($file->getTimestamp())), __METHOD__);
     } else {
         $quality = is_null($file->quality) ? false : $file->quality;
     }
     # If reviewed, class the line
     if ($quality !== false) {
         $rowClass = FlaggedRevsXML::getQualityColor($quality);
     }
     return true;
 }