LayoutTests/fast/layoutformattingcontext/height-percentage-quirk-to-icb.html

<!-- webkit-test-runner [ LayoutFormattingContextEnabled=true InlineFormattingContextIntegrationEnabled=false ] -->
<style>
div {
    border: 1px solid green;
    height: 50%;
    width: 50px;
}

</style>
<div></div>