third_party/WebKit/LayoutTests/fast/spatial-navigation/snav-stay-in-overflow-div.html

<script src="../../resources/js-test.js"></script>
<script src="resources/spatial-navigation-utils.js"></script>
<script>
var resultMap = [
  ["Down", "a"], // Scrolled so no focus change.
  ["Down", "b"],
  ["Down", "c"],
  ["Up", "b"],
  ["Up", "b"],   // Scrolled so no focus change.
  ["Up", "a"],
  ["DONE", "DONE"]
];

if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.overridePreference("WebKitTabToLinksPreferenceKey", 1);
  testRunner.overridePreference("WebKitSpatialNavigationEnabled", 1);
  testRunner.waitUntilDone();
}

function runTest()
{
  // Start at a known place.
  document.getElementById("a").focus();
  initTest(resultMap, testCompleted);
}

function testCompleted()
{
  if (window.testRunner)
    testRunner.notifyDone();
}

window.onload = runTest;
</script>

<style>
  div.scroll {
    /* The div displays one line of text at once. */
    line-height: 1.5em;
    height: 1.5em;
    overflow-y: scroll;
  }
</style>

<div class="scroll">
  <a href="#" id="a">a</a><br>
  <a href="#" id="b">b</a>
</div>
<a href="#" id="c">c</a>
<div id="console"></div>