Fix net_export.h includes.

net/quic/core/quic_received_packet_manager.h

 // Copyright 2013 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.
 //
 // Manages the packet entropy calculation for both sent and received packets
 // for a connection.
 
 #ifndef NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_
 #define NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_
 
 #include <stddef.h>
 
 #include <deque>
 
 #include "base/macros.h"
+#include "net/base/net_export.h"
 #include "net/quic/core/quic_config.h"
 #include "net/quic/core/quic_framer.h"
 #include "net/quic/core/quic_protocol.h"
 
 namespace net {
 
 namespace test {
 class EntropyTrackerPeer;
 class QuicConnectionPeer;
 class QuicReceivedPacketManagerPeer;
@@ skipping 158 matching lines @@
   QuicTime time_largest_observed_;
 
   QuicConnectionStats* stats_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicReceivedPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_