chrome/browser/language/android/java/res/layout/languages_preference.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2017 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/accept_language_list_container"
    style="@style/PreferenceLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingStart="0dp"
    android:paddingEnd="0dp"
    android:padding="0dp"
    android:orientation="vertical" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/draggable_list_item_padding"
        android:text="@string/languages_list_description" />

    <FrameLayout
        android:id="@android:id/widget_frame"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/add_language"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/selectableItemBackground"
        android:clickable="true"
        android:focusable="true"
        android:gravity="center_vertical"
        android:padding="@dimen/draggable_list_item_padding"
        android:paddingStart="@dimen/pref_languages_add_button_padding"
        android:drawablePadding="@dimen/pref_languages_add_button_padding"
        android:text="@string/add_language"
        style="@style/PreferenceTitle" />

</LinearLayout>