The patch fixes a bug with the viewport and scissor state not being correctly updated for side-by-side framebuffers. BUG=angleproject:2062 TEST=angle_end2end_tests Change-Id: I5f85b8146174d78a363316a66e2761e37305cffe Reviewed-on: https://chromium-review.googlesource.com/663260 Commit-Queue: Martin Radev <mradev@nvidia.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>
