chromium/components/browser_ui/widget/android/java/res/drawable/modern_toolbar_tablet_text_box_background.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.
-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@drawable/modern_toolbar_text_box_background"
    android:top="@dimen/modern_toolbar_background_vertical_offset"
    android:bottom="@dimen/modern_toolbar_background_vertical_offset" />
</layer-list>