Scope global lock in entry points This change is a no-op. It's in preparation for adding calls at the end of the entry point after the lock is unlocked. Bug: angleproject:8127 Change-Id: I4cd79ff8e5f20f87f36040afbd1ed9f16406d519 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4436589 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com>