Remove explicit usage of SequencedWorkerPool from UploadList.

chrome/browser/crash_upload_list/crash_upload_list.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/crash_upload_list/crash_upload_list.h"
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
-#include "base/threading/sequenced_worker_pool.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_paths.h"
 #include "content/public/browser/browser_thread.h"
 
 #if defined(OS_MACOSX) || defined(OS_WIN)
 #include "chrome/browser/crash_upload_list/crash_upload_list_crashpad.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/crash_upload_list/crash_upload_list_android.h"
@@ skipping 11 matching lines @@
       crash_dir_path.AppendASCII(CrashUploadList::kReporterLogFilename);
 #if defined(OS_ANDROID)
   return new CrashUploadListAndroid(delegate, upload_log_path,
                                     content::BrowserThread::GetBlockingPool());
 #else
   return new CrashUploadList(delegate, upload_log_path,
                              content::BrowserThread::GetBlockingPool());
 #endif  // defined(OS_ANDROID)
 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 }