third_party/blink/web_tests/fast/loader/url-data-replace-backslash.html

<script>
var d5 = "fail";
</script>
<script type="text/javascript" src="data:text/javascript,d5%20%3D%20'five\u0027s'%3B"></script>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
if (d5 == "five's") {
  document.write("PASS");
} else {
  document.write("FAIL: d5 was: " + d5 + " should have been : five's");
}
</script>