This both deduplicates shared state by multiple passes or pipelines and
makes checking pipeline compatibility a single pointer check. It will be
useful for also checking RenderBundle compatibility.
Bug: dawn:154
Change-Id: I0fb289fab5ac76a7fbd500f64b8a6409a246ab32
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/9461
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Austin Eng