For golang/go#15554 Also update app target sdk api to 23. Change-Id: Id66b17b4388703e9806cc50def554b3c58606e24 Reviewed-on: https://go-review.googlesource.com/23690 Reviewed-by: David Crawshaw <crawshaw@golang.org> Reviewed-by: Elias Naur <elias.naur@gmail.com>