scrolled-iframe-scrollbar-change.html

<!DOCTYPE html>
<head>
<style>
body {
    overflow: hidden;
}
div {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
iframe {
    display: block;
    width: 100%;
    height: 100%;
}
</style>
</head>
<body>
<div><iframe src="../resources/repaint-with-scrollbar-change.html"></iframe></div>

chromium/third_party/blink/web_tests/paint/invalidation/scroll/scrolled-iframe-scrollbar-change.html