[cros] Postpone call to GetNativeWindow() in NetworkDropdown till it's really needed.

chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.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/webui/chromeos/login/network_dropdown_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
@@ skipping 63 matching lines @@
     NOTREACHED();
   bool oobe;
   if (!args->GetBoolean(1, &oobe))
     NOTREACHED();
 
 
   double last_network_type = -1;  // Javascript passes integer as double.
   if (!args->GetDouble(2, &last_network_type))
     NOTREACHED();
 
-  dropdown_.reset(new NetworkDropdown(web_ui_, GetNativeWindow(), oobe));
+  dropdown_.reset(new NetworkDropdown(web_ui_, oobe));
 
   if (last_network_type >= 0) {
     dropdown_->SetLastNetworkType(
         static_cast<ConnectionType>(last_network_type));
   }
 }
 
 void NetworkDropdownHandler::HandleNetworkDropdownHide(
     const base::ListValue* args) {
   DCHECK(args->GetSize() == 0);
   dropdown_.reset();
 }
 
 void NetworkDropdownHandler::HandleNetworkDropdownRefresh(
     const base::ListValue* args) {
   DCHECK(args->GetSize() == 0);
   // Since language change is async,
   // we may in theory be on another screen during this call.
   if (dropdown_.get())
     dropdown_->Refresh();
 }
 
 }  // namespace chromeos