Photo Picker dialog: Add a test.

chrome/android/java/res/layout/photo_picker_bitmap_view.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!--
      Copyright 2017 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.
 -->
 
 <!-- Represents a single item in the Photo Picker. -->
 
 <view class="org.chromium.chrome.browser.photo_picker.PickerBitmapView"
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content">
 
     <FrameLayout
         android:id="@+id/border"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center">
 
         <ImageView
@@ skipping 10 matching lines @@
             android:contentDescription="@null"
             android:visibility="gone" />
     </FrameLayout>
 
     <ImageView
         android:id="@+id/selected"
         android:layout_width="26dp"
         android:layout_height="26dp"
         android:layout_marginStart="2dp"
         android:layout_marginTop="2dp"
-        android:background="@drawable/checkmark_blue"
         android:contentDescription="@null"
-        android:visibility="gone" />
+        android:visibility="gone"
+        app:srcCompat="@drawable/checkmark_blue" />
 
     <ImageView
         android:id="@+id/unselected"
         android:layout_width="22dp"
         android:layout_height="22dp"
         android:layout_marginStart="4dp"
         android:layout_marginTop="4dp"
         android:background="@drawable/circle_white"
         android:contentDescription="@null"
         android:visibility="gone" />
@@ skipping 22 matching lines @@
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/photo_picker_label_gap"
             android:fontFamily="sans-serif-medium"
             android:gravity="center"
             android:textStyle="bold"
             android:textSize="14sp"
             android:textAllCaps="true"
             android:textColor="@color/photo_picker_special_tile_color" />
     </LinearLayout>
 </view>