Not sure at the moment if we can only disable tests in D3D9/etc,
but these tests are broken for D3D9 and hence we can disable them
to return angle_tests to passing.

BUG=angle:769

Change-Id: I3c13f985fde99c3d885f825de60af841c8f3f0f1
Reviewed-on: https://chromium-review.googlesource.com/221067Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>