tree 6d8e722a29e178e4a8cf77eb2accca11f2e8a71a
parent 81ff542774d51d68f16bf02974d756cce1cdd529
author Xianzhu Wang <wangxianzhu@chromium.org> 1642148169 -0800
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1642149251 -0800

Include will-change:transform as transform for background-attachment:fixed

This is to prevent jump of background when an element with will-change:
transform changes transform from initial to non-identity. This is not in
the spec yet, so the test case is tentative with a css-transforms-1 bug
is filed at https://github.com/w3c/csswg-drafts/issues/6951. Firefox
already has this behavior.

Bug: 1286593
Change-Id: I4247824b5af28613644bcd334832ff22b9483384
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3385337
Reviewed-by: David Baron <dbaron@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#959058}