web/web_export_view/static/xml/web_advanced_export.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- vim:fdl=1:
-->
<templates id="template" xml:space="preserve">
<t t-name="AddExportViewMain">
    <div class="oe_form_dropdown_section">
        <button class="oe_dropdown_toggle oe_dropdown_arrow">Export Current View</button>
        <ul class="oe_dropdown_menu">
            <li class="oe_sidebar_export_view_xls"><span>Excel</span></li>
        </ul>
    </div>
</t>
</templates>