CopyResource may only be used for resources that have exactly the same
format, dimension, mips, layers. And it can only be used if the entire
texture region is copied.
Bug: dawn:353
Change-Id: Ia8f96cc10c88fe026e23bce2d0532624725b12e0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/16984
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>