tree ef19f758677ca622980a33e460f3cb4638302ff8
parent 08c9b526802dae671db449a4a94bacb604fd01b4
author John Glassmyer <jogl@google.com> 1430944551 -0700
committer John Glassmyer <jogl@google.com> 1430947469 -0700

Prohibit extensions other than non-map message fields and groups.

Change-Id: Ib7d91b5ba5f1d76a92c49952bcc27359c0790978