The issue is no longer reproducible on newest drivers.

TEST=angle_end2end_tests

Change-Id: I18728877ed9b936ecb469c44e3dae185ab4f08d3
Reviewed-on: https://chromium-review.googlesource.com/362950Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>