Conversations/res/menu/choose_contact.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/action_search"
        android:actionLayout="@layout/actionview_search"
        android:icon="@drawable/ic_action_search"
        android:showAsAction="collapseActionView|always"
        android:title="@string/search"/>

</menu>