chromium/components/browser_ui/widget/android/java/res/drawable/search_row_modern_bg.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.
-->

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@macro/toolbar_background_primary" />
        </shape>
    </item>
    <item android:drawable="@drawable/modern_toolbar_text_box_background" />
</layer-list>