LayoutTests/fast/layoutformattingcontext/simple-absolute-positioned-replaced-inline-element-with-percentage-height.html

<!-- webkit-test-runner [ internal:LayoutFormattingContextEnabled=true internal:LayoutFormattingContextIntegrationEnabled=false ] -->
<style>
iframe {
    position: absolute;
    height: 50%;
    border: 1px solid green;
}
</style>
<div><iframe frameborder=no></iframe></div>