chromium/chrome/android/features/tab_ui/java/res/drawable/price_card_scrim.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2020 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">
    <gradient
        android:startColor="@color/black_alpha_38"
        android:endColor="@android:color/transparent"
        android:angle="270"
        android:type="linear"/>
</shape>