Shifts the older enum values up by 30, but if anyone was using values
rather than the enums themselves they'd land on the right formats
anyway.
Bug: dawn:695
Change-Id: I92a177b427fb1bb14b60d9280f89d030c5941a38
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/42561
Commit-Queue: Brandon Jones <bajones@chromium.org>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Auto-Submit: Brandon Jones <bajones@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>