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chromium/third_party/blink/web_tests/paint/invalidation/compositing/composited-non-stacking-context-not-invalidation-container-expected.html 

<!DOCTYPE html>
<style>
#non-composited-pseudo-stacking-context-descendant {
    position: relative;
    top: 10px;
    width: 400px;
    background: green;
}
</style>
<div id="non-composited-pseudo-stacking-context-descendant">
    This test succeed if the text gets repainted with a green background.<br/>
    The text belongs to a (pseudo) stacking context that is enclosed by a composited
    non-stacking context. Since the parent is not a stacking context, this (pseudo)
    stacking context should be painted as a child stacking context of the root.
</div>