net: Cleanup class/struct forward declarations

net/quic/test_tools/quic_connection_peer.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_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_
 #define NET_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_
 
 #include "base/macros.h"
 #include "net/base/ip_endpoint.h"
 #include "net/quic/core/quic_connection.h"
 #include "net/quic/core/quic_connection_stats.h"
 #include "net/quic/core/quic_protocol.h"
 #include "net/quic/platform/api/quic_socket_address.h"
 
 namespace net {
 
-struct QuicAckFrame;
 struct QuicPacketHeader;
 class QuicAlarm;
 class QuicConnectionHelperInterface;
 class QuicConnectionVisitorInterface;
 class QuicEncryptedPacket;
 class QuicFramer;
 class QuicPacketCreator;
 class QuicPacketGenerator;
 class QuicPacketWriter;
-class QuicReceivedPacketManager;
 class QuicSentPacketManager;
 class SendAlgorithmInterface;
 
 namespace test {
 
 // Peer to make public a number of otherwise private QuicConnection methods.
 class QuicConnectionPeer {
  public:
   static void SendAck(QuicConnection* connection);
 
@@ skipping 88 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(QuicConnectionPeer);
 };
 
 }  // namespace test
 
 }  // namespace net
 
 #endif  // NET_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_