chrome/android/java/res/drawable/btn_infobar_blue.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="false"
        android:state_focused="false"
        android:state_selected="false">
        <shape>
            <solid android:color="@color/infobar_accent_blue" />
            <corners android:radius="1dp" />
        </shape>
    </item>
    <item>
        <shape>
            <solid android:color="@color/infobar_accent_blue_pressed" />
            <corners android:radius="1dp" />
        </shape>
    </item>
</selector>