chromium/chrome/android/java/res/layout/bookmark_widget_icons_only.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2016 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="@dimen/bookmark_widget_min_width"
    android:layout_height="match_parent">

    <include layout="@layout/bookmark_widget" />

</FrameLayout>