chromium/chrome/browser/ui/android/multiwindow/java/res/layout/instance_switcher_dialog.xml

<?xml version="1.0" encoding="utf-8"?>

<!--
Copyright 2021 The Chromium Authors
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"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <include layout="@layout/instance_switcher_list"/>
</FrameLayout>