Update from chromium https://crrev.com/302282

net/base/net_log_util.h

+// Copyright 2014 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.
+
+#ifndef NET_BASE_NET_LOG_UTIL_H_
+#define NET_BASE_NET_LOG_UTIL_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "net/base/net_export.h"
+
+namespace base {
+class DictionaryValue;
+class Value;
+}
+
+namespace net {
+
+class URLRequestContext;
+
+// A set of flags that can be OR'd together to request specific information
+// about the current state of the URLRequestContext.  See GetNetInfo, below.
+enum NetInfoSource {
+#define NET_INFO_SOURCE(label, string, value) NET_INFO_ ## label = value,
+#include "net/base/net_info_source_list.h"
+#undef NET_INFO_SOURCE
+  NET_INFO_ALL_SOURCES = -1,
+};
+
+// Utility methods for creating NetLog dumps.
+
+// Create a dictionary containing legend for net/ constants.
+NET_EXPORT scoped_ptr<base::DictionaryValue> GetNetConstants();
+
+// Retrieves a dictionary containing information about the current state of
+// |context|.  |info_sources| is a set of NetInfoSources OR'd together,
+// indicating just what information is being requested.  Each NetInfoSource adds
+// one top-level entry to the returned dictionary.
+NET_EXPORT scoped_ptr<base::DictionaryValue> GetNetInfo(
+    URLRequestContext* context, int info_sources);
+
+}  // namespace net
+
+#endif  // NET_BASE_NET_LOG_UTIL_H_