<html>
<head>
    <style>
        .box {
            height: 10000000px;
            width: 100px;
            -webkit-perspective: 100;
            -webkit-mask-box-image: url("bogus.png");
         }
     </style>
     <script>
         if (window.testRunner)
            testRunner.dumpAsText();
     </script>
</head>
<body>
    <!-- This should not crash -->
    <div class="box"></div>
</body>
</html>