Make FileSystemOperation::Write take closure-friendly parameters

webkit/browser/fileapi/file_writer_delegate.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 "webkit/browser/fileapi/file_writer_delegate.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_util_proxy.h"
 #include "base/message_loop.h"
@@ skipping 22 matching lines @@
     case net::ERR_ACCESS_DENIED:
       return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
     default:
       return base::PLATFORM_FILE_ERROR_FAILED;
   }
 }
 
 }  // namespace
 
 FileWriterDelegate::FileWriterDelegate(
-    const DelegateWriteCallback& write_callback,
     scoped_ptr<FileStreamWriter> file_stream_writer)
-    : write_callback_(write_callback),
-      file_stream_writer_(file_stream_writer.Pass()),
+    : file_stream_writer_(file_stream_writer.Pass()),
       writing_started_(false),
       bytes_written_backlog_(0),
       bytes_written_(0),
       bytes_read_(0),
       io_buffer_(new net::IOBufferWithSize(kReadBufSize)) {
 }
 
 FileWriterDelegate::~FileWriterDelegate() {
 }
 
-void FileWriterDelegate::Start(scoped_ptr<net::URLRequest> request) {
+void FileWriterDelegate::Start(scoped_ptr<net::URLRequest> request,
+                               const DelegateWriteCallback& write_callback) {
+  write_callback_ = write_callback;
   request_ = request.Pass();
   request_->Start();
 }
 
 void FileWriterDelegate::Cancel() {
   if (request_) {
     // This halts any callbacks on this delegate.
     request_->set_delegate(NULL);
     request_->Cancel();
   }
@@ skipping 175 matching lines @@
   if (error == base::PLATFORM_FILE_OK && flush_error != net::OK) {
     // If the Flush introduced an error, overwrite the status.
     // Otherwise, keep the original error status.
     error = NetErrorToPlatformFileError(flush_error);
     progress_status = GetCompletionStatusOnError();
   }
   write_callback_.Run(error, bytes_written, progress_status);
 }
 
 }  // namespace fileapi