1863146 - (webgpu-update-cts) [meta] Re-vendoring of WebGPU CTS into `mozilla-central`

Status: ASSIGNED

(Core :: Graphics: WebGPU, task)

Description

[Erich Gubler [:ErichDonGubler] (he/him)]

Meta bug for points at which we update WebGPU CTS in mozilla-central.

General instructions for updating WebGPU CTS

1. CC yourself on this bug. When Updatebot files a bug against it (configured in dom/webgpu/tests/cts/moz.yaml), take the bug and assign yourself to it.
2. Now, you need to reconcile test expectations with the new version of the CTS. (This is, unfortunately, the most laborious part. 😅) This will be a loop where you:
   1. Start CI run(s) using the preset configured for Updatebot. Updatebot files the first one for you!
   2. Download reports from your Try pushes and process them.
      1. It's recommended you download these with treeherder-dl, using an invocation like treeherder-dl --artifact 'public/test_info/wptreport.json' try:<revision>
      2. Update the expected property of metadata using moz-webgpu-cts update-expected. If you are running this on the second run or later, you can use --preset merge to converge intermittent expectations more quickly.
      3. Update the implementation-status property of metadata using moz-webgpu-cts update-backlog sync perma-passing.
      4. Update the bug's patch stack with your latest results.