Add RetainedRef uses where needed.

content/browser/download/save_file_resource_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 "content/browser/download/save_file_resource_handler.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 67 matching lines @@
 }
 
 bool SaveFileResourceHandler::OnReadCompleted(int bytes_read, bool* defer) {
   DCHECK(read_buffer_.get());
   // We are passing ownership of this buffer to the save file manager.
   scoped_refptr<net::IOBuffer> buffer;
   read_buffer_.swap(buffer);
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(&SaveFileManager::UpdateSaveProgress, save_manager_,
-                 save_item_id_, buffer, bytes_read));
+                 save_item_id_, base::RetainedRef(buffer), bytes_read));
   return true;
 }
 
 void SaveFileResourceHandler::OnResponseCompleted(
     const net::URLRequestStatus& status,
     const std::string& security_info,
     bool* defer) {
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(&SaveFileManager::SaveFinished, save_manager_, save_item_id_,
                  save_package_id_,
                  status.is_success() && !status.is_io_pending()));
   read_buffer_ = NULL;
 }
 
 void SaveFileResourceHandler::OnDataDownloaded(int bytes_downloaded) {
   NOTREACHED();
 }
 
 void SaveFileResourceHandler::set_content_length(
     const std::string& content_length) {
   base::StringToInt64(content_length, &content_length_);
 }
 
 }  // namespace content