The script currently lives in Chromium's build/secondary.

BUG=angle:683

Change-Id: I3ce11913fd27e0a01a1763d6ed973b250cf101d8
Reviewed-on: https://chromium-review.googlesource.com/205244Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Shannon Woods <shannonwoods@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>