chromium/components/payments/content/android/java/res/layout/payment_handler_content.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2019 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<org.chromium.chrome.browser.payments.handler.PaymentHandlerContentFrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/payment_handler_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

</org.chromium.chrome.browser.payments.handler.PaymentHandlerContentFrameLayout>