Updates golang/go#27234 Updates golang/go#30228 Change-Id: Ibe281480398ff9d8c27657f399159885a75f646e Reviewed-on: https://go-review.googlesource.com/c/mobile/+/167179 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>