2003441 - [wpt-sync] Sync PR 56392 - webnn: relax layer norm precision for fp16 test

Status: NEW

(Testing :: web-platform-tests, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 56392 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/56392
Details from upstream follow.

Phillis Tang <[e-mail]> wrote:

webnn: relax layer norm precision for fp16 test

tflite gpu backend produces correct result but with lower precision
(ULP 29), so relax our test expectations.

Bug: 460534989
Change-Id: I602e8b07e1dfe54e80634d24c6b1d23521df0654
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7213411
Reviewed-by: Reilly Grant \<[e-mail]>
Commit-Queue: Phillis Tang \<[e-mail]>
Cr-Commit-Position: refs/heads/main@{#1552508}

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=1968375c35e44e2aa779e628b54e0dffa29f8d33

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Attachment: Notable wpt changes

# CI Results

Ran 9 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 396 tests

## Status Summary

### Firefox
`OK`  : 3
`FAIL`: 3

### Chrome
`OK`  : 3
`PASS`: 78

### Safari
`OK`  : 3
`FAIL`: 3

## Links
[Gecko CI (Treeherder)](https://treeherder.mozilla.org/#/jobs?repo=try&revision=1968375c35e44e2aa779e628b54e0dffa29f8d33)
[GitHub PR Head](https://wpt.fyi/results/?sha=a13721e0eae3ff71e03474e6e905615251929fc0&label=pr_head)
[GitHub PR Base](https://wpt.fyi/results/?sha=a13721e0eae3ff71e03474e6e905615251929fc0&label=pr_base)

## Details

(See attachment for full changes)