visual-viewport-scrolled-from-main.html

<!DOCTYPE html>
<link rel="match" href="visual-viewport-scrolled-from-main-expected.html">
<style>
  body, html {
    margin: 0;
    width: 100%;
    height: 100%;
    background-color: red;
  }
  div {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 50%;
    height: 50%;
    background-color: green;
  }
</style>
<script>
  // This test ensures that changes to the visual viewport scroll offset set
  // from the main thread are propagated to the compositor. Use a ref test to
  // ensure the compositor layers have the expected state. Test passes if the
  // output is a fully green screen.
  window.onload = () => {
    if (window.internals) {
      window.internals.setPageScaleFactor(2);
      window.internals.setVisualViewportOffset(400, 300);
    }
  };
</script>
<div></div>

chromium/third_party/blink/web_tests/fast/scrolling/visual-viewport-scrolled-from-main.html