<script>
if (window.testRunner) {
    if (!window.localStorage.page1Started) {
        // On the first visit, clear the back forward list to start fresh,
        // then set up the test.
        window.localStorage.page1Started = true;
        testRunner.clearBackForwardList();
        testRunner.dumpBackForwardList();
        testRunner.dumpAsText();

        // Visit two pages, then go back to page 2, which has a slow frame the 
        // second time, and then back to page 1 before page 2 commits.
        testRunner.queueLoad("resources/back-twice-page-2.html");
        testRunner.queueLoad("resources/back-twice-page-3.html");
        testRunner.queueBackNavigation(1);
        testRunner.queueBackNavigation(1);
    } else {
        delete window.localStorage.page1Started;
    }
}
</script>
<p>This test checks that going back twice without committing doesn't corrupt the back/forward list.
<p>If testing manually, <a href="resources/back-twice-page-2.html">click here</a>.