chromium/android_webview/nonembedded/java/res_devui/layout/activity_main.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.
-->

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/header">

    <include
        android:layout_alignParentTop="true"
        layout="@layout/persistent_error_message"
        android:id="@+id/main_error_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <FrameLayout
        android:layout_below="@id/main_error_view"
        android:layout_above="@id/bottom_divider"
        android:id="@+id/content_fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <!-- horizontal divider -->
    <View
        android:id="@+id/bottom_divider"
        android:layout_above="@id/nav_view"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="?android:attr/listDivider"/>

    <!-- bottom navigation bar -->
    <LinearLayout
        android:id="@+id/nav_view"
        android:padding="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:background="?android:attr/windowBackground">
        <!--suppress HardcodedText -->
        <TextView
            android:id="@+id/navigation_home"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/ic_action_home"
            android:text="Home"
            android:gravity="center_horizontal"
            tools:ignore="UseCompatTextViewDrawableXml"
            android:layout_weight="1">
        </TextView>
        <!--suppress HardcodedText -->
        <TextView
            android:id="@+id/navigation_crash_ui"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/ic_alert_error"
            android:text="Crashes"
            android:gravity="center_horizontal"
            tools:ignore="UseCompatTextViewDrawableXml"
            android:layout_weight="1">
        </TextView>
        <!--suppress HardcodedText -->
        <TextView
            android:id="@+id/navigation_flags_ui"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/ic_flag"
            android:text="Flags"
            android:gravity="center_horizontal"
            tools:ignore="UseCompatTextViewDrawableXml"
            android:layout_weight="1">
        </TextView>
        <!--suppress HardcodedText -->
        <TextView
            android:id="@+id/navigation_net_logs_ui"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/ic_net_log"
            android:text="Net Logs"
            android:gravity="center_horizontal"
            tools:ignore="UseCompatTextViewDrawableXml"
            android:layout_weight="1">
        </TextView>
    </LinearLayout>
</RelativeLayout>