This CL sets up the basis for the intrinsic file generation. All of
the GN and CMake pieces are setup, but they aren't hooked into the
main build yet. That will be a followup which just enables the
generation in order to allow easy reverting.
Change-Id: Iccac59377076ed6ac66eeaf0be965be2f49bc738
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107981
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>