Fix save file stuff to use scoped_refptr for refcounted params.

chrome/browser/renderer_host/save_file_resource_handler.cc

 // Copyright (c) 2010 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/renderer_host/save_file_resource_handler.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
 #include "chrome/browser/browser_thread.h"
@@ skipping 62 matching lines @@
     *buf_size = min_size < 0 ? kReadBufSize : min_size;
     read_buffer_ = new net::IOBuffer(*buf_size);
   }
   *buf = read_buffer_.get();
   return true;
 }
 
 bool SaveFileResourceHandler::OnReadCompleted(int request_id, int* bytes_read) {
   DCHECK(read_buffer_);
   // We are passing ownership of this buffer to the save file manager.
-  net::IOBuffer* buffer = NULL;
-  read_buffer_.swap(&buffer);
+  scoped_refptr<net::IOBuffer> buffer;
+  read_buffer_.swap(buffer);
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(save_manager_,
                         &SaveFileManager::UpdateSaveProgress,
                         save_id_,
                         buffer,
                         *bytes_read));
   return true;
 }
 
@@ skipping 15 matching lines @@
 
 void SaveFileResourceHandler::OnRequestClosed() {
 }
 
 void SaveFileResourceHandler::set_content_length(
     const std::string& content_length) {
   base::StringToInt64(content_length, &content_length_);
 }
 
 SaveFileResourceHandler::~SaveFileResourceHandler() {}