google_map/views/res_partner_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="view_partner_form_inh09052019">
            <field name="name">res.partner.form.inh</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="type">form</field>
            <field name="arch" type="xml">
                <field name="street" position="before">
                    <button name="open_map" string="Map" type="object" class="oe_link or_right"/>
                </field>
                <!-- <xpath expr="/form/sheet/notebook/page/field[@name='child_ids']/form/sheet/group/group/div/div[@name='div_address']/field[@name='street']" position="before">
                    <button name="open_map" string="Map" type="object" class="oe_link or_right" />
                </xpath>  -->
            </field>
        </record>
    </data>
</openerp>