chromium/chrome/android/java/res/drawable/home_surface_background.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2023 The Chromium Authors.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<org.chromium.components.browser_ui.widget.SurfaceColorDrawable
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:shape="rectangle"
    app:surfaceElevation="@dimen/home_surface_background_color_elevation">
</org.chromium.components.browser_ui.widget.SurfaceColorDrawable>