chrome/android/java/res/drawable/app_banner_button_open.xml

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright 2014 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.
-->

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape>
            <solid android:color="#ebebeb" />
            <stroke android:width="1dp" android:color="#cccccc" />
        </shape>
    </item>
    <item>
        <shape>
            <solid android:color="#ffffff" />
            <stroke android:width="1dp" android:color="#d9d9d9"/>
        </shape>
    </item>
</selector>