android/ArcPipVideoTest/res/layout/video_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2020 The Chromium OS Authors. All rights reserved.
     Use of this source code is governed by a BSD-style license that can be
     found in the LICENSE file.
-->
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="org.chromium.arc.testapp.pictureinpicturevideo.VideoActivity">

  <VideoView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:id="@+id/testvideo" />

</FrameLayout>