Address bar is shown on pop-out extension windows.

chrome/browser/ui/browser_navigator.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/browser_navigator.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "chrome/browser/browser_url_handler.h"
@@ skipping 168 matching lines @@
       // Find a compatible window and re-execute this command in it. Otherwise
       // re-run with NEW_WINDOW.
       if (profile)
         return GetOrCreateBrowser(profile);
       return NULL;
     case NEW_POPUP: {
       // Make a new popup window.
       if (profile) {
         // Coerce app-style if |params->browser| or |source| represents an app.
         std::string app_name;
-        if (params->browser && !params->browser->app_name().empty()) {
+        if (!params->extension_app_id.empty()) {
+          app_name = params->extension_app_id;
+        } else if (params->browser && !params->browser->app_name().empty()) {
           app_name = params->browser->app_name();
         } else if (params->source_contents &&
                    params->source_contents->extension_tab_helper()->is_app()) {
           app_name = params->source_contents->extension_tab_helper()->
               extension_app()->id();
         }
         if (app_name.empty()) {
           Browser::CreateParams browser_params(Browser::TYPE_POPUP, profile);
           browser_params.initial_bounds = params->window_bounds;
           return Browser::CreateWithParams(browser_params);
@@ skipping 321 matching lines @@
           params->url, params->referrer, params->transition);
     }
 
     // If the singleton tab isn't already selected, select it.
     if (params->source_contents != params->target_contents)
       params->browser->ActivateTabAt(singleton_index, user_initiated);
   }
 }
 
 }  // namespace browser