commit c46bd1953af25cb7187e6770de661f2e54c2c76c
author Loko Kung <lokokung@google.com> Thu Aug 18 09:37:34 2022
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Thu Aug 18 09:37:34 2022
tree b3f7d78ade8823a1854c5d737ecc033a829af908
parent a108daa6caa4205a6ff0671f467945042b453097

Adds gpu cache destroyed callback for each cache.

- By setting the destroyed callback, the browser can notify the GPU
  process that the cache is no longer being used on the browser side
  and hence safe to stage it for removal on the GPU side. Without this
  the GPU process doesn't know when it can cull stale or unused
  in-memory caches. Note that we cannot just cull them when they are no
  longer used on the GPU side because it is possible for the browser to
  create new GPU channels referencing the culled cache since the browser
  does not know that they have been destroyed on the GPU side. This
  results in the GPU using an empty in-memory cache that will never be
  populated.

Bug: dawn:549
Change-Id: Ie4578a44518c4bdafff9466efe0c05b42c89f08d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3827706
Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1036526}