chromium/android_webview/tools/system_webview_shell/apk/res/layout/fragment_webview_browser.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2023 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"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical">
  <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="horizontal"
      tools:ignore="UselessParent">
    <EditText
        android:id="@+id/url_field"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1.0"
        android:hint="@string/url_hint"
        android:imeOptions="actionGo"
        android:importantForAutofill="no"
        android:inputType="textUri"
        android:selectAllOnFocus="true"
        android:singleLine="true" />
    <ImageButton
        android:id="@+id/btn_load_url"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:background="@null"
        android:contentDescription="@string/load_url"
        android:src="@drawable/breadcrumb_arrow_black" />
  </LinearLayout>
</LinearLayout>