chromium/chrome/browser/download/internal/android/java/res/layout/download_home_toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2018 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <!-- This view provides a background for the toolbar when the page's background
         is visible through the lateral margins of the search view -->
    <View
        android:id="@+id/action_bar_bg"
        android:layout_width="match_parent"
        android:layout_height="@dimen/selectable_list_toolbar_height"
        android:background="@macro/toolbar_background_primary" />

    <org.chromium.chrome.browser.download.home.toolbar.DownloadHomeToolbar
        android:id="@+id/download_toolbar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/selectable_list_toolbar_height"
        style="@style/ModernToolbar"/>

    <org.chromium.components.browser_ui.widget.FadingShadowView
        android:id="@+id/shadow"
        android:layout_width="match_parent"
        android:layout_height="@dimen/action_bar_shadow_height"
        android:layout_marginTop="@dimen/selectable_list_toolbar_height"
        android:visibility="gone"/>
</FrameLayout>