If a draw does not have enough vertices for its primitive count to
produce a primitive then skip it. If an instanced draw has 0 instances
or not have enough vertices for its primitive count to
produce a primitive then skip it.
This means a Point with 0 vertices, a Line w/ 0-1 vertices, or a tri
with 0-2 primitives.

Updated some redundant code in the D3D11 backend. Draws below the
minDrawCount will no longer be passed to the backend so updated the
associated state in StateManager11 to only track the case where all
primitives should be culled due to GL state settings.

BUG=angleproject:2568
TEST=functional_transform_feedback_basic_types_interleaved_lines_lowp_int

Change-Id: I9faa767c12004fcdec923ec70a8ee5615d789813
Reviewed-on: https://chromium-review.googlesource.com/1120849
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>