Update from https://crrev.com/304121

net/socket_stream/socket_stream_metrics.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.
-//
-// Collect metrics of SocketStream usage.
-// TODO(ukai): collect WebSocket specific metrics (e.g. handshake time, etc).
-
-#ifndef NET_SOCKET_STREAM_SOCKET_STREAM_METRICS_H_
-#define NET_SOCKET_STREAM_SOCKET_STREAM_METRICS_H_
-
-#include "base/basictypes.h"
-#include "base/time/time.h"
-#include "net/base/net_export.h"
-
-class GURL;
-
-namespace net {
-
-class NET_EXPORT_PRIVATE SocketStreamMetrics {
- public:
-  enum ProtocolType {
-    PROTOCOL_UNKNOWN,
-    PROTOCOL_WEBSOCKET,
-    PROTOCOL_WEBSOCKET_SECURE,
-    NUM_PROTOCOL_TYPES,
-  };
-
-  enum ConnectionType {
-    CONNECTION_NONE,
-    ALL_CONNECTIONS,
-    TUNNEL_CONNECTION,
-    SOCKS_CONNECTION,
-    SSL_CONNECTION,
-    SECURE_PROXY_CONNECTION,
-    NUM_CONNECTION_TYPES,
-  };
-
-  enum WireProtocolType {
-    WIRE_PROTOCOL_WEBSOCKET,
-    WIRE_PROTOCOL_SPDY,
-    NUM_WIRE_PROTOCOL_TYPES,
-  };
-
-  explicit SocketStreamMetrics(const GURL& url);
-  ~SocketStreamMetrics();
-
-  void OnWaitConnection();
-  void OnStartConnection();
-  void OnConnected();
-  void OnRead(int len);
-  void OnWrite(int len);
-  void OnClose();
-  void OnCountConnectionType(ConnectionType type);
-  void OnCountWireProtocolType(WireProtocolType type);
-
- private:
-  base::TimeTicks wait_start_time_;
-  base::TimeTicks connect_start_time_;
-  base::TimeTicks connect_establish_time_;
-  int received_bytes_;
-  int received_counts_;
-  int sent_bytes_;
-  int sent_counts_;
-
-  DISALLOW_COPY_AND_ASSIGN(SocketStreamMetrics);
-};
-
-}  // namespace net
-
-#endif  // NET_SOCKET_STREAM_SOCKET_STREAM_METRICS_H_