chromium/chrome/browser/ui/messages/android/test/java/res/layout/test_snackbar_manager_activity_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2022 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_height="match_parent"
    android:layout_width="match_parent" >

    <FrameLayout
        android:id="@+id/alternate_parent_1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <FrameLayout
        android:id="@+id/alternate_parent_2"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>