my-component.html

<link rel="import" href="bower_components/core-toolbar/core-toolbar.html">
<link rel="import" href="bower_components/core-drawer-panel/core-drawer-panel.html">
<link rel="import" href="bower_components/core-header-panel/core-header-panel.html">

<polymer-element name="my-component">
    <template>

        <core-drawer-panel id="drawerPanel" narrow="false" responsiveWidth="860px">


            <core-header-panel mode="seamed" main> 
                <core-toolbar>

                </core-toolbar>
                <div>
                  <a href="http://www.google.de">GOOGLE</a>
                </div>

            </core-header-panel>

        </core-drawer-panel>

    </template>

    <script>

    Polymer('my-component', {

    });

    </script>
</polymer-element>