Change-Id: Ie7f6592d726eba73a5e6b3203e083bff55ff8e4e
GitHub-Last-Rev: 4e317b39dd337f95aa7b7f321906e69a2c14b84e
GitHub-Pull-Request: golang/go#27977
Reviewed-on: https://go-review.googlesource.com/c/139100Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>