Use TaskScheduler instead of blocking pool in zip_file_creator.cc.

chrome/browser/chromeos/file_manager/zip_file_creator.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/chromeos/file_manager/zip_file_creator.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/message_loop/message_loop.h"
-#include "base/threading/sequenced_worker_pool.h"
+#include "base/task_scheduler/post_task.h"
 #include "chrome/common/chrome_utility_messages.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/utility_process_host.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::BrowserThread;
 using content::UtilityProcessHost;
 
 namespace {
 
 // Creates the destination zip file only if it does not already exist.
-base::File OpenFileHandleOnBlockingThreadPool(const base::FilePath& zip_path) {
+base::File OpenFileHandleAsync(const base::FilePath& zip_path) {
   return base::File(zip_path, base::File::FLAG_CREATE | base::File::FLAG_WRITE);
 }
 
 }  // namespace
 
 namespace file_manager {
 
 ZipFileCreator::ZipFileCreator(
     const ResultCallback& callback,
     const base::FilePath& src_dir,
     const std::vector<base::FilePath>& src_relative_paths,
     const base::FilePath& dest_file)
     : callback_(callback),
       src_dir_(src_dir),
       src_relative_paths_(src_relative_paths),
       dest_file_(dest_file) {
   DCHECK(!callback_.is_null());
 }
 
 void ZipFileCreator::Start() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
-  base::PostTaskAndReplyWithResult(
-      BrowserThread::GetBlockingPool(),
-      FROM_HERE,
-      base::Bind(&OpenFileHandleOnBlockingThreadPool, dest_file_),
+  base::PostTaskWithTraitsAndReplyWithResult(
+      FROM_HERE, base::TaskTraits().MayBlock(),
+      base::Bind(&OpenFileHandleAsync, dest_file_),
       base::Bind(&ZipFileCreator::OnOpenFileHandle, this));
 }
 
 ZipFileCreator::~ZipFileCreator() {
 }
 
 bool ZipFileCreator::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ZipFileCreator, message)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_CreateZipFile_Succeeded,
@@ skipping 49 matching lines @@
 
 void ZipFileCreator::ReportDone(bool success) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   // Guard against calling observer multiple times.
   if (!callback_.is_null())
     base::ResetAndReturn(&callback_).Run(success);
 }
 
 }  // namespace file_manager