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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
<html>
<head></head>
<body style="font-size: 36px">
<h1>Hello world!</h1>
<p>This is a browser action default popup.</p>
</body>
</html>