res/layout/search_edittext.xml

<?xml version="1.0" encoding="utf-8"?>
<view class="com.android.contacts.widget.SearchEditTextLayout"
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:id="@+id/search_view_container"
      android:orientation="horizontal"
      android:layout_marginTop="0dp"
      android:layout_marginBottom="0dp"
      android:layout_marginLeft="0dp"
      android:layout_marginRight="0dp"
      android:background="@drawable/rounded_corner"
      android:elevation="3dp">

    <include layout="@layout/search_bar_expanded" />

</view>