Make various state setting entry points lockless These entry points only set context-local state and thus don't require locking. Bug: angleproject:8224 Change-Id: I428c23cc862e9356d571bc085b5df0bf48017175 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4661700 Reviewed-by: Igor Nazarov <i.nazarov@samsung.com> Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>