tree f133b35f8de1530c82352656a04df6834786c93e
parent 4ed41fb5b16c9496757f13ccb2dadbc14063e396
author Vladimir Levin <vmpstr@chromium.org> 1610985435 -0800
committer Chromium WPT Sync <blink-w3c-test-autoroller@chromium.org> 1610985435 -0800

content-visibility: Ignore layout shifts if auto lock visibility is toggled.

This patch ignores layout shifts in the frame where an auto lock switched
from being renderer to unrendered or vice versa. The reasoning for this
is that the content-visibility element is likely to change size due to
size-containment being applied. That size can, and frequenty does, shift
contents in the viewport. We rely on scroll anchoring to ensure nothing
visibly changes.

However, the position of the element does change. We prefer not to
penalize the site for this.

R=sullivan@chromium.org, skobes@chromium.org

Bug: 1164942
Change-Id: I3dc53813147f0ffeec6c6ceb4d6825042fe33a63