Use it to implement lazy state setting methods for texture filters and
swizzle that will be used in subsequent workarounds.

BUG=angleproject:1356

Change-Id: Ia58267c4f125262cf57fbd98438a6d8eb8a04b33
Reviewed-on: https://chromium-review.googlesource.com/412404Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>