Showing launcher items for windowed v1 apps - pinned or not. Also - don't show windowed v1 apps in …

chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc

 // 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 "chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.h"
 
 #include "ash/wm/window_util.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_tab.h"
@@ skipping 127 matching lines @@
   refocus_pattern.SetMatchAllURLs(true);
 
   if (!refocus_url_.is_empty()) {
     refocus_pattern.SetMatchAllURLs(false);
     refocus_pattern.Parse(refocus_url_.spec());
   }
 
   const Extension* extension =
       launcher_controller()->GetExtensionForAppID(app_id());
 
+  // It is possible to come here While an extension gets loaded.
+  if (!extension)
+    return items;
+
   const chrome::BrowserListImpl* ash_browser_list =
       chrome::BrowserListImpl::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
   for (chrome::BrowserListImpl::const_reverse_iterator it =
            ash_browser_list->begin_last_active();
        it != ash_browser_list->end_last_active(); ++it) {
     Browser* browser = *it;
     TabStripModel* tab_strip = browser->tab_strip_model();
     // We start to enumerate from the active index.
     int active_index = tab_strip->active_index();
     for (int index = 0; index  < tab_strip->count(); index++) {
       content::WebContents* web_contents = tab_strip->GetWebContentsAt(
           (index + active_index) % tab_strip->count());
       const GURL tab_url = web_contents->GetURL();
       // There are three ways to identify the association of a URL with this
       // extension:
       // - The refocus pattern is matched (needed for apps like drive).
       // - The extension's origin + extent gets matched.
       // - The launcher controller knows that the tab got created for this app.
       if ((!refocus_pattern.match_all_urls() &&
            refocus_pattern.MatchesURL(tab_url)) ||
           (extension->OverlapsWithOrigin(tab_url) &&
            extension->web_extent().MatchesURL(tab_url)) ||
           launcher_controller()->GetPerAppInterface()->
              IsWebContentHandledByApplication(web_contents, app_id()))
         items.push_back(web_contents);
     }
   }
   return items;
 }