Reimplements net::AddressList without struct addrinfo.

net/socket/transport_client_socket_pool.h

 // 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.
 
 #ifndef NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_
 #define NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 51 matching lines @@
                       base::TimeDelta timeout_duration,
                       ClientSocketFactory* client_socket_factory,
                       HostResolver* host_resolver,
                       Delegate* delegate,
                       NetLog* net_log);
   virtual ~TransportConnectJob();
 
   // ConnectJob methods.
   virtual LoadState GetLoadState() const OVERRIDE;
 
-  // Makes |addrlist| start with an IPv4 address if |addrlist| contains any
-  // IPv4 address.
-  //
-  // WARNING: this method should only be used to implement the prefer-IPv4
-  // hack.  It is a public method for the unit tests.
-  static void MakeAddrListStartWithIPv4(AddressList* addrlist);
+  // Rolls |addrlist| forward until the first IPv4 address, if any.
+  // WARNING: this method should only be used to implement the prefer-IPv4 hack.
+  static void MakeAddressListStartWithIPv4(AddressList* addrlist);
 
   static const int kIPv6FallbackTimerInMs;
 
  private:
   enum State {
     STATE_RESOLVE_HOST,
     STATE_RESOLVE_HOST_COMPLETE,
     STATE_TRANSPORT_CONNECT,
     STATE_TRANSPORT_CONNECT_COMPLETE,
     STATE_NONE,
@@ skipping 122 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TransportClientSocketPool);
 };
 
 REGISTER_SOCKET_PARAMS_FOR_POOL(TransportClientSocketPool,
                                 TransportSocketParams);
 
 }  // namespace net
 
 #endif  // NET_SOCKET_TRANSPORT_CLIENT_SOCKET_POOL_H_