am 9b078384: am 6ca2db13: am 7630b478: am f2d09988: am 4115d56f: am 0afd5a4d: am 3e0d99fa: Merge "Update MessageNano#toString() to return mostly valid TextFormat."

* commit '9b07838482cc1c03bf486ea9b5f465d329bb07df':