This was mostly working already, just needed to set up a few entry
points.

BUG=angleproject:2200

Change-Id: I9c13d6d4dd42f23c69a58e42e07e3e28877671a1
Reviewed-on: https://chromium-review.googlesource.com/734237Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Frank Henigman <fjhenigman@chromium.org>