Added Net logging to FileStream.

net/base/file_stream_net_log_parameters.cc

Index: net/base/file_stream_net_log_parameters.cc
diff --git a/net/base/file_stream_net_log_parameters.cc b/net/base/file_stream_net_log_parameters.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7a82424494f023f069c3c2a8d1db17b6c88b712e
--- /dev/null
+++ b/net/base/file_stream_net_log_parameters.cc
@@ -0,0 +1,27 @@
+// 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 "net/base/file_stream_net_log_parameters.h"
+
+#include "base/values.h"
+
+namespace net {
+
+FileStreamErrorParameters::FileStreamErrorParameters(
+    const std::string& operation, int os_error, net::Error net_error)
+        : operation_(operation), os_error_(os_error), net_error_(net_error) {
+}
+
+Value* FileStreamErrorParameters::ToValue() const {
+  DictionaryValue* dict = new DictionaryValue();
+
+  dict->SetString("operation", operation_);
+  dict->SetInteger("os_error", os_error_);
+  dict->SetInteger("net_error", net_error_);
+  dict->SetString("net_error_name", net::ErrorToString(net_error_));
+
+  return dict;
+}
+
+}  // namespace net