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

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2016 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. -->

<!-- Header containing information about the site.
     Java code inflating this layout manages the hiding and adjustment of elements in the layout.
     Request dialog: Displays an X in the top right corner, allowing the user to close it.
     Result dialog:  Displays no X.  Title goes all the way to the end.
-->
<merge xmlns:android="http://schemas.android.com/apk/res/android" >

    <FrameLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:minHeight="64dp"
        android:background="@android:color/white" >

        <ImageView
            android:id="@+id/icon_view"
            android:layout_height="24dp"
            android:layout_width="24dp"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_gravity="start|center_vertical"
            android:importantForAccessibility="no"
            android:scaleType="centerInside" />

        <LinearLayout
            android:id="@+id/page_info"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:layout_marginStart="56dp"
            android:layout_marginEnd="56dp"
            android:layout_marginBottom="@dimen/payments_section_vertical_spacing"
            android:layout_marginTop="@dimen/payments_section_vertical_spacing"
            android:layout_gravity="center_vertical"
            android:orientation="vertical">

            <TextView
                android:id="@+id/page_title"
                android:layout_height="wrap_content"
                android:layout_width="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:singleLine="true"
                android:textColor="@color/default_text_color"
                android:textSize="16sp"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/hostname"
                android:layout_height="wrap_content"
                android:layout_width="wrap_content"
                android:ellipsize="start"
                android:maxLines="1"
                android:singleLine="true"
                android:textColor="@color/descriptive_text_color"
                android:textSize="14sp" />
        </LinearLayout>

        <ImageView
            android:id="@+id/close_button"
            android:layout_gravity="end|center_vertical"
            android:layout_height="56dp"
            android:layout_width="56dp"
            android:src="@drawable/btn_close"
            android:contentDescription="@string/close"
            android:background="?attr/selectableItemBackground"
            android:scaleType="center" />
    </FrameLayout>

</merge>