chrome/android/java/res/layout/button_preference_layout.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. -->

<!-- Layout used by ButtonPreference for the button widget style. -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    style="@style/PreferenceLayout"
    android:id="@android:id/widget_frame"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clipToPadding="false"
    android:gravity="center_vertical"
    android:orientation="vertical"/>