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chromium/third_party/blink/web_tests/virtual/text-antialias/bidi-isolate-nextlinebreak-failure.html 

<!DOCTYPE html>
This tests having an inline element with -webkit-isolate immediately following BR.
WebKit should not hit an assertion.
<br><span style="unicode-bidi:-webkit-isolate;"></span>
<script>

if (window.testRunner)
    testRunner.dumpAsText();

</script>