Missed in prior commit.

Change-Id: Ib3a41fb4e4d41feeb28c316fe70a329c73e72379
Reviewed-on: https://go-review.googlesource.com/29088
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>