Add the "options_ui" extension manifest field.

chrome/browser/resources/extensions/extension_list.js

 // Copyright (c) 2012 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.
 
 <include src="extension_error.js">
 
 /**
  * The type of the extension data object. The definition is based on
  * chrome/browser/ui/webui/extensions/extension_basic_info.cc
  * and
@@ skipping 254 matching lines @@
                       [extension.id, String(e.target.checked)]);
         });
         fileAccess.querySelector('input').checked = extension.allowFileAccess;
         fileAccess.hidden = false;
       }
 
       // The 'Options' link.
       if (extension.enabled && extension.optionsUrl) {
         var options = node.querySelector('.options-link');
         options.addEventListener('click', function(e) {
-          if (this.data_.enableEmbeddedExtensionOptions) {
+          if (this.data_.enableEmbeddedExtensionOptions &&

[not at google - send to devlin, 2014/08/29 05:39:23]

The flag check should be unnecessary now, so long as OpenInTab returns true when
the flag is off. Which it should.

[ericzeng, 2014/08/29 16:52:22]

Hold your horses, I haven't removed the feature flag quite yet.

[ericzeng, 2014/08/29 22:08:49]

Done.

+              !extension.options_open_in_tab) {
             this.showEmbeddedExtensionOptions_(extension.id, false);
           } else {
             chrome.send('extensionSettingsOptions', [extension.id]);
           }
           e.preventDefault();
         }.bind(this));
         options.hidden = false;
       }
 
       // The 'Permissions' link.
@@ skipping 243 matching lines @@
       $('overlay').addEventListener('cancelOverlay', function() {
         this.optionsShown_ = false;
       }.bind(this));
     },
   };
 
   return {
     ExtensionsList: ExtensionsList
   };
 });