This binary will be used to generate internal shaders for
clearing/blit/etc.

Re-land fixes missing GN dependencies.

Bug: angleproject:2339
Change-Id: I99a966906f6cd31049807b7b7adf39484c951622
Reviewed-on: https://chromium-review.googlesource.com/924177
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Luc Ferron <lucferron@chromium.org>