chrome/android/java/res/xml/homepage_preferences.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2015 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. -->

<android.support.v7.preference.PreferenceScreen
    xmlns:android="http://schemas.android.com/apk/res/android">

    <org.chromium.chrome.browser.preferences.ChromeSwitchPreferenceCompat
        android:key="homepage_switch"
        android:summaryOn="@string/text_on"
        android:summaryOff="@string/text_off" />

    <android.support.v7.preference.Preference
        android:key="homepage_edit"
        android:title="@string/options_homepage_edit_label"
        android:fragment="org.chromium.chrome.browser.preferences.HomepageEditor" />

</android.support.v7.preference.PreferenceScreen>