<!-- webkit-test-runner [ UsesBackForwardCache=true ] -->
<html>
<script>

// Navigation steps
// 1. loads this page and it has a horizontal scrollbar
// 2. Navigates to a data URL and navigates back
function verifyPage()
{
    var result = (innerHeight === document.documentElement.offsetHeight)
        ? "FAIL: Scrollbar did not appear"
        : "PASS";
    document.body.innerHTML = result;
    if (window.testRunner)
        testRunner.notifyDone();
}

function navigateAwayAndBack() 
{
    sessionStorage.horizontal_scroll_after_back_test_started = true;
    document.getElementById('anchor').click();
}

function runTestStep() 
{
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
    }
    setTimeout("navigateAwayAndBack()", 0);
}

function onVerifyPage(evt)
{
    if (!sessionStorage.horizontal_scroll_after_back_test_started)
        return;
    delete sessionStorage.horizontal_scroll_after_back_test_started;

    // If pageshow is happening as result of navigation back then we proceed.
    if (evt.persisted)
        setTimeout("verifyPage()", 0);
    else {
        document.body.innerHTML = "FAIL: Page did not go into the back/forward cache";
        if (window.testRunner)
            testRunner.notifyDone();
    }
}

onpageshow = onVerifyPage;
</script>
<head>
<style type="text/css">
<!--
#content {
  background: #fff;
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1500px;
  height: 1500px;
}
-->
</style>
</head>
<body onload='runTestStep()'>
<div id="content"> <a id='anchor' href='../history/resources/page-cache-helper.html'>Where is the scrollbar?</a></div>
</body>
</html>