root-background-with-page-scaled-out.html

<!DOCTYPE html>
<html style="position:absolute; left:100px; top:100px; width:100px; height:100px; background:green;">
<head>
<script>
// This test ensures we paint the entirety of the root background even when zooming page out
if (window.internals) {
    internals.setPageScaleFactorLimits(0.5, 4);
    internals.setPageScaleFactor(0.5);
}
</script>
</head>
<body>
</body>

chromium/third_party/blink/web_tests/fast/backgrounds/root-background-with-page-scaled-out.html