Add OptionsUI and its handler for multiple displays.

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 4a258be358deb6040192d8dacbb07677be30e6ac..60ac565da4448b0329d2861585b6d2b71869a9e6 100644
--- a/chrome/browser/resources/options2/options.html
+++ b/chrome/browser/resources/options2/options.html
@@ -39,6 +39,7 @@
   <link rel="stylesheet" href="chromeos/bluetooth.css">
   <link rel="stylesheet" href="chromeos/image_picker.css">
   <link rel="stylesheet" href="chromeos/internet_detail.css">
+  <link rel="stylesheet" href="chromeos/display_options.css">
   <link rel="stylesheet" href="chromeos/pointer_overlay.css">
 </if>
 <if expr="pp_ifdef('chromeos') and pp_ifdef('use_ash')">
@@ -99,6 +100,7 @@
     <include src="chromeos/change_picture_options.html">
     <include src="chromeos/keyboard_overlay.html">
     <include src="chromeos/pointer_overlay.html">
+    <include src="chromeos/display_options.html">
   </if>
   <if expr="pp_ifdef('chromeos') and pp_ifdef('use_ash')">
     <include src="chromeos/set_wallpaper_options.html">