net: Cleanup class/struct forward declarations

net/socket/ssl_server_socket_impl.h

 // Copyright 2014 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_SOCKET_SSL_SERVER_SOCKET_IMPL_H_
 #define NET_SOCKET_SSL_SERVER_SOCKET_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "net/base/completion_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/socket/ssl_server_socket.h"
 #include "net/ssl/ssl_server_config.h"
 #include "third_party/boringssl/src/include/openssl/base.h"
 
 namespace net {
 
-class SSLInfo;
-
 class SSLServerContextImpl : public SSLServerContext {
  public:
   SSLServerContextImpl(X509Certificate* certificate,
                        const crypto::RSAPrivateKey& key,
                        const SSLServerConfig& ssl_server_config);
   ~SSLServerContextImpl() override;
 
   std::unique_ptr<SSLServerSocket> CreateSSLServerSocket(
       std::unique_ptr<StreamSocket> socket) override;
 
  private:
   bssl::UniquePtr<SSL_CTX> ssl_ctx_;
 
   // Options for the SSL socket.
   SSLServerConfig ssl_server_config_;
 
   // Certificate for the server.
   scoped_refptr<X509Certificate> cert_;
 
   // Private key used by the server.
   std::unique_ptr<crypto::RSAPrivateKey> key_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_SERVER_SOCKET_IMPL_H_