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chromium/third_party/blink/web_tests/svg/custom/title-assertion.html 

<!DOCTYPE html>
<html>
<script src="../../resources/js-test.js"></script>
<svg>
<title>title</title>
</svg>
<script>
document.title = 'New title';
description('We had a bug that updating document.title caused an assertion failure.');
testPassed('if any assertion does not fail.');
</script>
</html>