chrome/android/java/res/layout/revamped_context_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2019 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. -->
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/modal_dialog_scrim_color">

    <org.chromium.chrome.browser.contextmenu.RevampedContextMenuListView
        android:id="@+id/context_menu_list_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_margin="24dp"
        android:background="@drawable/popup_bg_tinted"
        android:divider="@null" />
</FrameLayout>