Still working on how/when to call Stop.
Change-Id: Ice56c4c71ba351765657bb86dc01649c8238859e
Reviewed-on: https://go-review.googlesource.com/1885
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This lets you run really simple apps in a window on an OS X
machine. It's not an official target, but slightly more
productive than waiting for an apk install when working on
the sprite package.
LGTM=adg
R=golang-codereviews, adg
CC=golang-codereviews
https://golang.org/cl/147910043
