There are still DAWN_VALIDATION_ERROR occurences left but they don't use
any format string so it is fine to merge DAWN_FORMAT_VALIDATION_ERROR
into DAWN_VALIDATION_ERROR in follow-up CLs.
Bug: dawn:563
Change-Id: Ic1ba1de44216b36ef6a972712b957685e0ee193e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100467
Reviewed-by: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>