Enable user change background image in settings page in Aura build.

chrome/browser/resources/options2/options.html

Index: chrome/browser/resources/options2/options.html
diff --git a/chrome/browser/resources/options2/options.html b/chrome/browser/resources/options2/options.html
index 4e97b7ee68b6118e9b4f2f13a2d342465f937da5..8e8b37bb219ce1c1b4c507043ad28ecc90c6715a 100644
--- a/chrome/browser/resources/options2/options.html
+++ b/chrome/browser/resources/options2/options.html
@@ -38,12 +38,15 @@
 <if expr="pp_ifdef('chromeos')">
   <link rel="stylesheet" href="chromeos/accounts_options_page.css">
   <link rel="stylesheet" href="chromeos/bluetooth.css">
-  <link rel="stylesheet" href="chromeos/change_picture_options.css">
+  <link rel="stylesheet" href="chromeos/image_picker.css">
   <link rel="stylesheet" href="chromeos/internet_detail.css">
   <link rel="stylesheet" href="chromeos/internet_options_page.css">
   <link rel="stylesheet" href="chromeos/pointer_overlay.css">
   <link rel="stylesheet" href="chromeos/proxy.css">
 </if>
+<if expr="pp_ifdef('use_ash')">
+  <link rel="stylesheet" href="chromeos/set_wallpaper_options.css">
+</if>
 <if expr="pp_ifdef('chromeos') and pp_ifdef('use_virtual_keyboard')">
   <link rel="stylesheet" href="chromeos/virtual_keyboard.css">
 </if>
@@ -99,6 +102,9 @@
     <include src="chromeos/keyboard_overlay.html">
     <include src="chromeos/pointer_overlay.html">
   </if>
+  <if expr="pp_ifdef('use_ash')">
+    <include src="chromeos/set_wallpaper_options.html">
+  </if>
   <if expr="not is_win and not is_macosx">
     <include src="certificate_manager.html">
   </if>