net: Cleanup class/struct forward declarations

net/socket/client_socket_pool_manager.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.
 //
 // ClientSocketPoolManager manages access to all ClientSocketPools.  It's a
 // simple container for all of them.  Most importantly, it handles the lifetime
 // and destruction order properly.
 
 #ifndef NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_
 #define NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_
 
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_network_session.h"
 
-class GURL;
-
 namespace base {
 class Value;
 }
 
 namespace net {
 
 typedef base::Callback<int(const AddressList&, const NetLogWithSource& net_log)>
     OnHostResolutionCallback;
 
 class ClientSocketHandle;
@@ skipping 153 matching lines @@
     bool expect_spdy,
     const SSLConfig& ssl_config_for_origin,
     const SSLConfig& ssl_config_for_proxy,
     PrivacyMode privacy_mode,
     const NetLogWithSource& net_log,
     int num_preconnect_streams);
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_H_