Prefer ScopedNestableTaskAllower over manual save/restore

chrome/browser/ui/webui/downloads_dom_handler.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/webui/downloads_dom_handler.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/basictypes.h"
@@ skipping 250 matching lines @@
 void DownloadsDOMHandler::HandleDrag(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_DRAG);
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file) {
     IconManager* im = g_browser_process->icon_manager();
     gfx::Image* icon = im->LookupIcon(file->GetUserVerifiedFilePath(),
                                       IconLoader::NORMAL);
     gfx::NativeView view = web_ui()->GetWebContents()->GetNativeView();
     {
       // Enable nested tasks during DnD, while |DragDownload()| blocks.
-      MessageLoop::ScopedNestableTaskAllower allower(MessageLoop::current());
+      MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
       download_util::DragDownload(file, icon, view);
     }
   }
 }
 
 void DownloadsDOMHandler::HandleSaveDangerous(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_SAVE_DANGEROUS);
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file)
     file->DangerousDownloadValidated();
@@ skipping 93 matching lines @@
 }
 
 content::DownloadItem* DownloadsDOMHandler::GetDownloadByValue(
     const ListValue* args) {
   int id;
   if (ExtractIntegerValue(args, &id)) {
     return GetDownloadById(id);
   }
   return NULL;
 }