Mention our good ES 3.0 support. Also mention our multiplatform and
Vulkan support.

BUG=None

Change-Id: Ib2a3f94b56ecf3a3b20b960b3270ebbc8948a628
Reviewed-on: https://chromium-review.googlesource.com/367755
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shannon Woods <shannonwoods@chromium.org>