packages/SystemUI/screenshot/res/values/themes.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright (C) 2022 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->
<resources>
    <style name="Theme.SystemUI.Screenshot" parent="Theme.SystemUI">
        <item name="android:windowActionBar">false</item>
        <item name="android:windowNoTitle">true</item>

        <!-- We make the status and navigation bars transparent so that the screenshotted content is
             not clipped by the status bar height when drawn into the Bitmap (which is what happens
             given that we draw the view into the Bitmap using hardware acceleration). -->
        <item name="android:statusBarColor">@android:color/transparent</item>
        <item name="android:navigationBarColor">@android:color/transparent</item>

        <!-- Make sure that device specific cutouts don't impact the outcome of screenshot tests -->
        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
    </style>
</resources>