GL: Make sure primitive restart emulation is disabled below GL 3.1
GL: Make sure primitive restart emulation is disabled below GL 3.1

If the GL driver version is below 3.1, we cannot set the primitive
restart fixed index (ES3 wont be supported anyway). Make sure the
feature is disabled.

Speculative fix for crbug.com/1073020

BUG=chromium:1073020
BUG=angleproject:3997

Change-Id: I67756b377aa951da2e70c26f7db978ede9010586
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2159289
Commit-Queue: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>
Reviewed-by: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle