This makes the primitives in the serialized wire protocol
the same across platforms and architectures which is better
for both fuzzing and remoting Dawn.
Commands that used size_t are updated to use uint64_t, and
the server-side implementation checks if conversion to
size_t would narrow.
Bug: dawn:680
Change-Id: Icef9dc11a72699685ed7191c34d6a922b652c887
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/41582
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
f104fea367