chromium/chrome/android/java/res/drawable/shopping_accessory_view_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.
-->
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="@dimen/card_rounded_corner_radius"/>
    <solid android:color="@color/price_drop_annotation_bg_color"/>
</shape>