data-protection/privacy_consent/views/res_partner.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 Tecnativa - Jairo Llopis
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->

<data>

    <record id="view_partner_form" model="ir.ui.view">
        <field name="name">Add consent smart button</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_partner_form"/>
        <field
            name="groups_id"
            eval="[(4, ref('privacy.group_data_protection_user'))]"
        />
        <field name="arch" type="xml">
            <div name="button_box" position="inside">
                <!-- TODO Change icon to fa-handshake-o in Odoo 11 -->
                <button
                    attrs='{"invisible": [("privacy_consent_count", "=", 0)]}'
                    class="oe_stat_button"
                    context='{"search_default_partner_id": active_id}'
                    icon="fa-gavel"
                    name="%(consent_action)d"
                    type="action"
                >
                    <field
                        name="privacy_consent_count"
                        widget="statinfo"
                    />
                </button>
            </div>
        </field>
    </record>

</data>