Some renderer configurations (e.g. D3D11 Feature Level 9_3) have
some limitations and aren't quite conformant. This change
generates errors when applications hit these limitations, and
informs developers that they must work around them.

BUG=angleproject:1055

Change-Id: I6a4a9e5cc71288ca366a54c769ca0eb82e79a7f7
Reviewed-on: https://chromium-review.googlesource.com/282814Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>