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chromium/third_party/blink/web_tests/fast/forms/datetimelocal/reset-no-console-messages.html 

<!DOCTYPE html>
<link rel=author href="mailto:[email protected]">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1343222">

<div>This test passes if it generates no console messages.</div>
<form><input type=datetime-local></form>

<script>
  testRunner.dumpAsText();
  testRunner.setDumpConsoleMessages(true);
  // Forcing layout on the input is required to generate the console warning.
  document.querySelector('input').getBoundingClientRect();
  document.querySelector('form').reset();
</script>