- Not included: Smooth points

- GL_OES_point_sprite
- Update test expectations. Note: due to different random sampling,
edge cases were hit in UserClip. Disabling that test for now.

BUG=angleproject:2306

Change-Id: If8367bc3321804b3299d3bc381d6a8e236754baa
Reviewed-on: https://chromium-review.googlesource.com/1101910Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Lingfeng Yang <lfy@google.com>