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chromium/chrome/test/data/extensions/api_test/mime_handler_view/test_embedded.html 

<html>
<body>
<object id="plugin" width="200" height="200" data="testEmbedded.csv" type="text/csv">
  <!-- fallback used for sandbox test -->
  <div id="fallback">Fallback</div>
</object>
</body>
</html>