net: Cleanup class/struct forward declarations

net/tools/quic/test_tools/quic_test_client.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_TOOLS_QUIC_TEST_TOOLS_QUIC_TEST_CLIENT_H_
 #define NET_TOOLS_QUIC_TEST_TOOLS_QUIC_TEST_CLIENT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 14 matching lines @@
 
 namespace net {
 
 class ProofVerifier;
 
 class ProofVerifier;
 class QuicPacketWriterWrapper;
 
 namespace test {
 
-class HTTPMessage;
 class MockableQuicClient;
 
 // A quic client which allows mocking out reads and writes.
 class MockableQuicClient : public QuicClient {
  public:
   MockableQuicClient(QuicSocketAddress server_address,
                      const QuicServerId& server_id,
                      const QuicVersionVector& supported_versions,
                      EpollServer* epoll_server);
 
@@ skipping 301 matching lines @@
   std::string override_sni_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicTestClient);
 };
 
 }  // namespace test
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_TEST_TOOLS_QUIC_TEST_CLIENT_H_