chrome/android/java/res/values/ic_launcher_alias.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2017 The Chromium Authors. All rights reserved.
     Use of this source code is governed by a BSD-style license that can be
     found in the LICENSE file. -->

<resources>
    <drawable name="ic_launcher">@mipmap/app_icon</drawable>
</resources>