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

chrome/browser/ui/cocoa/extensions/extension_action_context_menu.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h"
 
 #include "base/sys_string_conversions.h"
 #include "base/task.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
@@ skipping 247 matching lines @@
     case kExtensionContextUninstall: {
       uninstaller_.reset(new AsyncUninstaller(extension_, profile_));
       break;
     }
     case kExtensionContextHide: {
       ExtensionService* extension_service = profile_->GetExtensionService();
       extension_service->SetBrowserActionVisibility(extension_, false);
       break;
     }
     case kExtensionContextManage: {
-      browser->OpenURL(GURL(chrome::kChromeUIExtensionsURL), GURL(),
-                       NEW_FOREGROUND_TAB, PageTransition::LINK);
+      browser->ShowOptionsTab(chrome::kExtensionsSubPage);
       break;
     }
     case kExtensionContextInspect: {
       BrowserWindowCocoa* window =
           static_cast<BrowserWindowCocoa*>(browser->window());
       ToolbarController* toolbarController =
           [window->cocoa_controller() toolbarController];
       LocationBarViewMac* locationBarView =
           [toolbarController locationBarBridge];
 
@@ skipping 36 matching lines @@
   }
   return YES;
 }
 
 - (void)invalidateProfile {
   observer_.reset();
   profile_ = NULL;
 }
 
 @end