net: Cleanup class/struct forward declarations

net/http/http_proxy_client_socket.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_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
 #define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "net/base/completion_callback.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/load_timing_info.h"
 #include "net/base/net_export.h"
 #include "net/http/http_auth_controller.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_info.h"
 #include "net/http/proxy_client_socket.h"
 #include "net/log/net_log_with_source.h"
 #include "net/socket/ssl_client_socket.h"
 
 namespace net {
 
-class AddressList;
 class ClientSocketHandle;
 class GrowableIOBuffer;
 class HttpStream;
 class HttpStreamParser;
 class IOBuffer;
 class ProxyDelegate;
 
 class NET_EXPORT_PRIVATE HttpProxyClientSocket : public ProxyClientSocket {
  public:
   // Takes ownership of |transport_socket|, which should already be connected
@@ skipping 128 matching lines @@
   ProxyDelegate* proxy_delegate_;
 
   const NetLogWithSource net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_