tools/android/customtabs_benchmark/res/layout/activity_web_view.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"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_web_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="org.chromium.customtabs.test.WebViewActivity"
    android:orientation="vertical">

    <ProgressBar
        style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/progress_bar"
        android:max="100" />

    <WebView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="0dp"
        android:padding="0dp"
        android:id="@+id/webview"
        android:visibility="visible"/>
</LinearLayout>