chromium/content/public/android/java/res/layout/two_field_date_picker.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2013 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pickers"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="horizontal" >

    <!-- Position in year -->

    <NumberPicker
        android:id="@+id/position_in_year"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:layout_marginStart="16dp"
        android:contentDescription="@string/accessibility_date_picker_month"
        android:focusable="true"
        android:focusableInTouchMode="true" />

    <!-- Year -->

    <NumberPicker
        android:id="@+id/year"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:layout_marginStart="16dp"
        android:contentDescription="@string/accessibility_date_picker_year"
        android:focusable="true"
        android:focusableInTouchMode="true" />

</LinearLayout>