tree e2852c7e9fb2f2ede5a4d5c2980271e1455fcb3f
parent acfc1be9d133314d1253bfb1f5549f5310f7a0a7
author Vladimir Levin <vmpstr@chromium.org> 1604696170 -0800
committer Chromium WPT Sync <blink-w3c-test-autoroller@chromium.org> 1604696170 -0800

content-visibility: Ensure we don't change values twice with animations.

This patch ensures that when computing style, we defer any display lock
state adjustments until we process both base style and adjust it for
animations.

Since the state changes can affect whether we are observing
intersections and whether to synchronously notify of intersection
changes, having the state go from visible (via base calculation) to
auto (via animation) is incorrect. Instead, the state should always
remain auto, even though we go to visible in the interim.

This is all done by saving the pending state and applying it after
both base and animation adjustments have happened.

R=chrishtr@chromium.org, futhark@chromium.org

Bug: 1146181
Change-Id: I499580c6c3c9e9e14dc59a93bd3325436088f05e