This Cl converts the cast in computeboids to a type constructor.
Change-Id: Ie1e7183226bb2f629f25cb2d35fc917d8ca68564
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29140
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>