Fix WeakPtrFactory member order in net/url_request/

net/url_request/url_fetcher_response_writer.cc

 // Copyright (c) 2013 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 "net/url_request/url_fetcher_response_writer.h"
 
 #include "base/file_util.h"
 #include "base/location.h"
 #include "base/sequenced_task_runner.h"
 #include "base/task_runner_util.h"
@@ skipping 34 matching lines @@
   return OK;
 }
 
 URLFetcherStringWriter* URLFetcherStringWriter::AsStringWriter() {
   return this;
 }
 
 URLFetcherFileWriter::URLFetcherFileWriter(
     scoped_refptr<base::SequencedTaskRunner> file_task_runner,
     const base::FilePath& file_path)
-    : weak_factory_(this),
-      file_task_runner_(file_task_runner),
+    : file_task_runner_(file_task_runner),
       file_path_(file_path),
-      owns_file_(false) {
+      owns_file_(false),
+      weak_factory_(this) {
   DCHECK(file_task_runner_.get());
 }
 
 URLFetcherFileWriter::~URLFetcherFileWriter() {
   CloseAndDeleteFile();
 }
 
 int URLFetcherFileWriter::Initialize(const CompletionCallback& callback) {
   file_stream_.reset(new FileStream());
 
@@ skipping 113 matching lines @@
 }
 
 void URLFetcherFileWriter::CloseComplete(const CompletionCallback& callback,
                                          int result) {
   // Destroy |file_stream_| whether or not the close succeeded.
   file_stream_.reset();
   callback.Run(result);
 }
 
 }  // namespace net