Migrate startup URLs pref.

chrome/browser/resources/options/browser_options.js

Index: chrome/browser/resources/options/browser_options.js
diff --git a/chrome/browser/resources/options/browser_options.js b/chrome/browser/resources/options/browser_options.js
index 133720a50d87112e4a084dbbf0d3296231847f69..e357b896e4fc86626b5ca09261b0bab1daa80531 100644
--- a/chrome/browser/resources/options/browser_options.js
+++ b/chrome/browser/resources/options/browser_options.js
@@ -103,10 +103,10 @@ cr.define('options', function() {
       }
 
       // On Startup section.
-      Preferences.getInstance().addEventListener('session.restore_on_startup',

[MAD, 2013/10/15 14:31:16]

This is not the same pref as urls_to_restore_on_startup, you should not change
that!

[robertshield, 2013/10/15 18:00:44]

Thanks, good catch.

+      Preferences.getInstance().addEventListener('session.startup_urls',
           this.onRestoreOnStartupChanged_.bind(this));
       Preferences.getInstance().addEventListener(
-          'session.urls_to_restore_on_startup',
+          'session.startup_urls',
           function(event) {
             $('startup-set-pages').disabled = event.value.disabled;
           });