Switch from chrome://extensions to chrome://settings/extensionSettings.

chrome/browser/ui/panels/panel_settings_menu_model.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/panels/panel_settings_menu_model.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 78 matching lines @@
           extension->id());
       break;
     case COMMAND_UNINSTALL:
       // TODO(jianli): Need to handle the case that the extension API requests
       // the panel to be closed when the uninstall dialog is still showing.
       extension_uninstall_dialog_.reset(new ExtensionUninstallDialog(
           browser->GetProfile()));
       extension_uninstall_dialog_->ConfirmUninstall(this, extension);
       break;
     case COMMAND_MANAGE:
-      browser->OpenURL(GURL(chrome::kChromeUIExtensionsURL),
-                            GURL(),
-                            SINGLETON_TAB,
-                            PageTransition::LINK);
+      browser->ShowOptionsTab(chrome::kExtensionsSubPage);
       break;
     default:
       NOTREACHED();
       break;
   }
 }
 
 void PanelSettingsMenuModel::ExtensionDialogAccepted() {
   const Extension* extension = panel_->GetExtension();
   DCHECK(extension);
 
   panel_->browser()->GetProfile()->GetExtensionService()->
       UninstallExtension(extension->id(), false, NULL);
 }
 
 void PanelSettingsMenuModel::ExtensionDialogCanceled() {
 }