chrome/android/java/res/anim/textbubble_out.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.
-->

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="@android:integer/config_shortAnimTime"
    android:interpolator="@android:anim/linear_interpolator" >

    <alpha
        android:fromAlpha="1.0"
        android:toAlpha="0" />

</set>