chromium/chrome/browser/download/internal/android/java/res/drawable/circular_progress_bar_resume_tiny.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2018 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/ic_play_arrow_white_24dp" />
    <item>
        <shape
            android:innerRadius="14dp"
            android:thickness="0dp"
            android:shape="ring"
            android:useLevel="false">
            <stroke
                android:width="2dp"
                android:color="@android:color/white" />
        </shape>
    </item>
</layer-list>