This patch extends the BindGroupTracker in the D3D12 and Vulkan backends to
track bound storage buffers. We insert barriers between dispatches to properly
synchronize writes to storage buffers.
Bug: dawn:236
Change-Id: Iab3f964c345b64755557ab206e05a2ff7b0a3a1f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12301
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>