server-tools/base_report_auto_create_qweb/views/report_xml_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="ir_actions_report_xml_form_view">
            <field name="name">ir.actions.report.xml.form</field>
            <field name="model">ir.actions.report.xml</field>
            <field name="priority" eval="5" />
            <field name="inherit_id" ref="base.act_report_xml_view" />
            <field name="arch" type="xml">
                <xpath expr="//form/group" position="before">
                    <header>
                        <button name="%(ir_actions_report_xml_duplicate_action)d"
                                string="Duplicate Report" class="oe_highlight" type="action"/>
                    </header>
                </xpath>
            </field>
        </record>
    </data>
</openerp>