This CL converts most of the remaining Tint usages (leaving out the
fuzzer code and some float_to_string code).
Bug: tint:1686
Change-Id: I4d5cef176c15479250861903870ec5bec0f95b5e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122002
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>