Add OptionsUI and its handler for multiple displays.

chrome/browser/resources/options2/options.js

Index: chrome/browser/resources/options2/options.js
diff --git a/chrome/browser/resources/options2/options.js b/chrome/browser/resources/options2/options.js
index 14e845e8f45b51ea2e753b8019d40686e7bfd1fe..69b9751785806b4a9001d02738487a6c5a54eea1 100644
--- a/chrome/browser/resources/options2/options.js
+++ b/chrome/browser/resources/options2/options.js
@@ -13,6 +13,7 @@ var ContentSettings = options.ContentSettings;
 var ContentSettingsExceptionsArea =
     options.contentSettings.ContentSettingsExceptionsArea;
 var CookiesView = options.CookiesView;
+var DisplayOptions = options.DisplayOptions;
 var FontSettings = options.FontSettings;
 var HandlerOptions = options.HandlerOptions;
 var HomePageOverlay = options.HomePageOverlay;
@@ -127,6 +128,9 @@ function load() {
                                 [$('account-picture')]);
     OptionsPage.registerOverlay(DetailsInternetPage.getInstance(),
                                 BrowserOptions.getInstance());
+    OptionsPage.registerOverlay(DisplayOptions.getInstance(),
+                                BrowserOptions.getInstance(),
+                                [$('display-options-button')]);
     OptionsPage.registerOverlay(KeyboardOverlay.getInstance(),
                                 BrowserOptions.getInstance(),
                                 [$('keyboard-settings-button')]);