net: Cleanup class/struct forward declarations

net/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_PROXY_CLIENT_SOCKET_H_
 #define NET_HTTP_PROXY_CLIENT_SOCKET_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "net/base/net_export.h"
 #include "net/socket/ssl_client_socket.h"
 #include "net/socket/stream_socket.h"
 
-class GURL;
-
 namespace net {
 
 class HostPortPair;
 class HttpAuthController;
 class HttpStream;
 class HttpResponseInfo;
 class HttpRequestHeaders;
-struct HttpRequestInfo;
 class HttpAuthController;
 class NetLogWithSource;
 
 class NET_EXPORT_PRIVATE ProxyClientSocket : public StreamSocket {
  public:
   ProxyClientSocket() {}
   ~ProxyClientSocket() override {}
 
   // Returns the HttpResponseInfo (including HTTP Headers) from
   // the response to the CONNECT request.
@@ skipping 55 matching lines @@
   // fail.
   static bool SanitizeProxyRedirect(HttpResponseInfo* response);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ProxyClientSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_PROXY_CLIENT_SOCKET_H_