Reporting out-of-range accesses in the OpenGL driver.

Bug: angleproject:4737
Tbr: syoussefi@chromium.org
Change-Id: Ib2598ba569c395ec39687fd1395149be5110f37f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2243757Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>