Updates #14786.

Change-Id: I5fe889886f772167386cd10390ac50abc1383937
Reviewed-on: https://go-review.googlesource.com/20607
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>