Extract external file systems handling from isolated context.

webkit/chromeos/fileapi/remote_file_stream_writer.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/chromeos/fileapi/remote_file_stream_writer.h"
 
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "webkit/blob/local_file_stream_reader.h"
 #include "webkit/blob/shareable_file_reference.h"
-#include "webkit/chromeos/fileapi/remote_file_system_proxy.h"
 #include "webkit/fileapi/local_file_stream_writer.h"
+#include "webkit/fileapi/remote_file_system_proxy.h"
 
 namespace fileapi {
 
 RemoteFileStreamWriter::RemoteFileStreamWriter(
     const scoped_refptr<RemoteFileSystemProxyInterface>& remote_filesystem,
     const FileSystemURL& url,
     int64 offset)
     : remote_filesystem_(remote_filesystem),
       url_(url),
       initial_offset_(offset),
@@ skipping 87 matching lines @@
   return net::OK;
 }
 
 void RemoteFileStreamWriter::InvokePendingCancelCallback(int result) {
   net::CompletionCallback callback = pending_cancel_callback_;
   pending_cancel_callback_.Reset();
   callback.Run(result);
 }
 
 }  // namespace gdata