chromium/chrome/android/java/res/drawable/bg_tabstrip_tab_divider.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.
-->

<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    <corners
        android:radius="1dp"/>
    <size
        android:width="2dp"
        android:height="20dp" />
    <!-- This resource is passed to the CC layer, which has not yet been updated
         to work with themes (See https://crbug.com/1381196). Instead, we
         dynamically re-color this asset in code. Leaving this solid color here
         to both indicate what color this should be and to allow for solid
         re-coloring. -->
    <solid
        android:color="@color/default_icon_color_accent1_baseline" />
</shape>