Extracting NetLog inner classes into their own classes.

net/socket/tcp_client_socket.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.
 
 #ifndef NET_SOCKET_TCP_CLIENT_SOCKET_H_
 #define NET_SOCKET_TCP_CLIENT_SOCKET_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "net/base/address_list.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
-#include "net/log/net_log.h"
 #include "net/socket/connection_attempts.h"
 #include "net/socket/stream_socket.h"
 #include "net/socket/tcp_socket.h"
 
 namespace net {
 
+class NetLog;
+struct NetLogSource;
 class SocketPerformanceWatcher;
 
 // A client socket that uses TCP as the transport layer.
 class NET_EXPORT TCPClientSocket : public StreamSocket {
  public:
   // The IP address(es) and port number to connect to.  The TCP socket will try
   // each IP address in the list until it succeeds in establishing a
   // connection.
   TCPClientSocket(
       const AddressList& addresses,
       std::unique_ptr<SocketPerformanceWatcher> socket_performance_watcher,
       net::NetLog* net_log,
-      const net::NetLog::Source& source);
+      const net::NetLogSource& source);
 
   // Adopts the given, connected socket and then acts as if Connect() had been
   // called. This function is used by TCPServerSocket and for testing.
   TCPClientSocket(std::unique_ptr<TCPSocket> connected_socket,
                   const IPEndPoint& peer_address);
 
   ~TCPClientSocket() override;
 
   // Binds the socket to a local IP address and port.
   int Bind(const IPEndPoint& address);
@@ skipping 99 matching lines @@
 
   // Total number of bytes received by the socket.
   int64_t total_received_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(TCPClientSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_TCP_CLIENT_SOCKET_H_