replaceChild siblings bug

third_party/blink/web_tests/fast/dom/replace-child-siblings.html

149.0.7827.2258 B

This is a test for https://bugs.webkit.org/show\_bug.cgi?id=6069 Assertion failure in LayoutBlockFlow::addChildToFlow during replaceChild. It tests whether replaceChild() works correctly when the new node and the old node are siblings.

Test result: