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   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf8" />
    <title>Mixed Active Content test</title>
  </head>
  <body>
    <iframe style="visibility: hidden" src="http://example.com"></iframe>
  </body>
</html>
