Added Net logging to FileStream.

net/base/file_stream_net_log_parameters.h

+// Copyright (c) 2011 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.
+
+// File error statistics gathering.

[mmenke, 2012/01/30 22:38:39]

This comment is incorrect, since we don't gather any statistics from NetLog
entries.

[ahendrickson, 2012/01/31 20:12:40]

Fixed.

+
+#ifndef NET_BASE_FILE_STREAM_NET_LOG_PARAMETERS_H_
+#define NET_BASE_FILE_STREAM_NET_LOG_PARAMETERS_H_
+#pragma once
+
+#include <string>
+
+#include "net/base/net_log.h"
+
+namespace net {
+
+// NetLog parameters when a FileStream has an error.
+class FileStreamErrorParameters : public net::NetLog::EventParameters {

[rvargas (doing something else), 2012/01/30 23:11:38]

shouldn't the file be named file_stream_error_parameters instead? Or is the plan
to add more things here?

[ahendrickson, 2012/01/31 20:12:40]

This is the pattern used elsewhere -- this file contains all the net log event
parameters for the file stream.

I anticipate that we will add things here in the future.  At the moment, all
file stream net log event types have only one parameter, which is handled by a
built-in EventParameter-derived class -- except for the error case.

+ public:
+  FileStreamErrorParameters(const std::string& operation,
+                            int system_error_code);
+  virtual base::Value* ToValue() const OVERRIDE;
+
+ private:
+  std::string operation_;
+  int system_error_code_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileStreamErrorParameters);
+};
+
+}  // namespace net
+
+#endif  // NET_BASE_FILE_STREAM_NET_LOG_PARAMETERS_H_