net: Cleanup class/struct forward declarations

net/spdy/spdy_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_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_
 #define NET_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 14 matching lines @@
 #include "net/http/proxy_client_socket.h"
 #include "net/log/net_log_with_source.h"
 #include "net/spdy/spdy_http_stream.h"
 #include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_read_queue.h"
 #include "net/spdy/spdy_session.h"
 #include "net/spdy/spdy_stream.h"
 
 namespace net {
 
-class AddressList;
 class HttpStream;
 class IOBuffer;
 class SpdyStream;
 
 class NET_EXPORT_PRIVATE SpdyProxyClientSocket : public ProxyClientSocket,
                                                  public SpdyStream::Delegate {
  public:
   // Create a socket on top of the |spdy_stream| by sending a HEADERS CONNECT
   // frame for |endpoint|.  After the response HEADERS frame is received, any
   // data read/written to the socket will be transferred in data frames. This
@@ skipping 132 matching lines @@
   // Only used for posting write callbacks. Weak pointers created by this
   // factory are invalidated in Disconnect().
   base::WeakPtrFactory<SpdyProxyClientSocket> write_callback_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdyProxyClientSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_