Unframe chrome://extensions as it's the last (and only) uber item

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">
 
 cr.define('extensions', function() {
   'use strict';
 
   var ExtensionType = chrome.developerPrivate.ExtensionType;
@@ skipping 966 matching lines @@
 
       if (!extension)
         return;
 
       if (scroll)
         this.scrollToWrapper_(extensionId);
 
       // Add the options query string. Corner case: the 'options' query string
       // will clobber the 'id' query string if the options link is clicked when
       // 'id' is in the URL, or if both query strings are in the URL.
-      uber.replaceState({}, '?options=' + extensionId);
+      window.history.replaceState({}, '', '/?options=' + extensionId);

[Devlin, 2017/06/12 14:17:18]

why window.history instead of history?  (I can't find any style rules here, but
it seems odd)

[Dan Beam, 2017/06/12 23:13:12]

it's because of the way it's externed:
https://github.com/google/closure-compiler/blob/41263520e01176aa03258b3868a23...

[Devlin, 2017/06/13 18:04:21]

Ah, interesting...

[Dan Beam, 2017/06/13 18:15:16]

Acknowledged.

 
       var overlay = extensions.ExtensionOptionsOverlay.getInstance();
       var shownCallback = function() {
         // This overlay doesn't get focused automatically as <extensionoptions>
         // is created after the overlay is shown.
         if (cr.ui.FocusOutlineManager.forDocument(document).visible)
           overlay.setInitialFocus();
       };
       overlay.setExtensionAndShow(extensionId, extension.name,
                                   extension.iconUrl, shownCallback);
       this.optionsShown_ = true;
 
       var self = this;
       $('overlay').addEventListener('cancelOverlay', function f() {
         self.optionsShown_ = false;
         $('overlay').removeEventListener('cancelOverlay', f);
 
         // Remove the options query string.
-        uber.replaceState({}, '');
+        window.history.replaceState({}, '', '/');
       });
 
       // TODO(dbeam): why do we need to focus <extensionoptions> before and
       // after its showing animation? Makes very little sense to me.
       overlay.setInitialFocus();
     },
 
     /**
      * Hides the extension options overlay for the extension with id
      * |extensionId|. If there is an overlay showing for a different extension,
@@ skipping 38 matching lines @@
         this.createWrapper_(extension, nextExt ? $(nextExt.id) : null);
       }
     }
   };
 
   return {
     ExtensionList: ExtensionList,
     ExtensionListDelegate: ExtensionListDelegate
   };
 });