This changeset reverts some or all edits made in changesets 172078436, 172131769, 172201297, 172238114, 172369710, 172426600, 172484676, 172523621, 172545924, 172570520, 172595269, 172649057, 172705100, 172854576, 172879447, 173026377, 173150837, 173194718, 173219358, 173380374, 173522942, 173632517, 173724479, 173823975, 173833054, 173855380, 173899290, 173928728, 174026702, 174070407, 174108800, 174121592, 174135006, 174142117, 174145539, 174420977.