This required changing DeviceBase::CreateBufferImpl to return
ResultOrError<Ref<BufferBase>>
Bug: chromium:1103154
Change-Id: I1a5811d293333b6ef29c988a08f2f1f84ac65702
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/24500
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>