Start delegating notifications to MessageCenter on Windows.

chrome/browser/extensions/api/notification/notification_api.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/extensions/api/notification/notification_api.h"
 
 #include "base/callback.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 162 matching lines @@
                       UTF8ToUTF16(i->get()->title));
       item->SetString(ui::notifications::kItemMessageKey,
                       UTF8ToUTF16(i->get()->message));
       items->Append(item);
     }
     optional_fields->Set(ui::notifications::kItemsKey, items);
   }
 
   string16 replace_id(UTF8ToUTF16(options->replace_id));
 
-  Notification notification(type, icon_url, title, message,
+  Notification notification(type, extension_->url(), icon_url, title, message,
                             WebKit::WebTextDirectionDefault,
                             string16(), replace_id,
                             optional_fields.get(),
                             new NotificationApiDelegate(this,
                                                         profile(),
                                                         extension_->id(),
                                                         replace_id));
   g_browser_process->notification_ui_manager()->Add(notification, profile());
 
   // TODO(miket): why return a result if it's always true?
   DictionaryValue* result = new DictionaryValue();
   result->SetBoolean(kResultKey, true);
   SetResult(result);
   SendResponse(true);
 
   return true;
 }
 
 }  // namespace extensions