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chromium
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chromium/third_party/blink/web_tests/printing/scrolled-horizontal-tb.html 

<!DOCTYPE html>
<div style="font-size:3em;">PASS</div>
<div style="width:5000px; height:5000px;"></div>
<script>
  window.scroll(1000, 100);
  if (window.testRunner)
      testRunner.setPrinting();
</script>