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

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2024 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<inset
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/modern_toolbar_text_box_background_with_primary_color"
    android:insetLeft="@dimen/custom_tabs_url_bar_bg_horizontal_padding"
    android:insetRight="@dimen/custom_tabs_url_bar_bg_horizontal_padding"/>