Add correctness testing for ANGLE D3D11 ES3

Bug=skia:6776

Change-Id: I51c851d6b80992039c87ae43037721db52958f0c
Reviewed-on: https://skia-review.googlesource.com/20503
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
4 files changed