Remove a bunch of extra includes.

net/http/http_proxy_client_socket_pool.h

 // Copyright (c) 2010 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_POOL_H_
 #define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_POOL_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "net/base/host_port_pair.h"
-#include "net/base/host_resolver.h"
 #include "net/http/http_auth.h"
-#include "net/proxy/proxy_server.h"
 #include "net/socket/client_socket_pool_base.h"
 #include "net/socket/client_socket_pool_histograms.h"
 #include "net/socket/client_socket_pool.h"
-#include "net/socket/tcp_client_socket_pool.h"
 
 namespace net {
 
 class ClientSocketFactory;
 class ConnectJobFactory;
+class HostResolver;
 class HttpAuthController;
 class HttpNetworkSession;
+class TCPClientSocketPool;
+class TCPSocketParams;
 
 class HttpProxySocketParams : public base::RefCounted<HttpProxySocketParams> {
  public:
   HttpProxySocketParams(const scoped_refptr<TCPSocketParams>& proxy_server,
                         const GURL& request_url, HostPortPair endpoint,
                         scoped_refptr<HttpNetworkSession> session,
                         bool tunnel);
 
   const scoped_refptr<TCPSocketParams>& tcp_params() const {
     return tcp_params_;
@@ skipping 157 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocketPool);
 };
 
 REGISTER_SOCKET_PARAMS_FOR_POOL(HttpProxyClientSocketPool,
                                 HttpProxySocketParams);
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_POOL_H_