chrome/android/java/res_download/layout/download_manager_image_item.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 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.
-->

<org.chromium.chrome.browser.download.home.list.view.AspectRatioFrameLayout
    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="wrap_content"
    android:clickable="true"
    android:background="@color/modern_secondary_color" >

    <org.chromium.chrome.browser.download.home.list.view.AsyncImageView
        android:id="@+id/thumbnail"
        android:layout_width="match_parent"
        android:background="@color/modern_grey_300"
        android:scaleType="centerCrop"
        android:layout_gravity="center"
        android:adjustViewBounds="true"
        style="@style/AsyncImageView"
        tools:ignore="ContentDescription"
        app:layout_aspectRatio="100%" />

    <org.chromium.chrome.browser.download.home.view.SelectionView
        android:id="@+id/selection"
        style="@style/DownloadItemSelectionView"/>
</org.chromium.chrome.browser.download.home.list.view.AspectRatioFrameLayout>