Fix net_export.h includes.

net/quic/chromium/quic_chromium_connection_helper.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.
 //
 // The Chrome-specific helper for QuicConnection which uses
 // a TaskRunner for alarms, and uses a DatagramClientSocket for writing data.
 
 #ifndef NET_QUIC_QUIC_CHROMIUM_CONNECTION_HELPER_H_
 #define NET_QUIC_QUIC_CHROMIUM_CONNECTION_HELPER_H_
 
 #include "base/macros.h"
 #include "net/base/ip_endpoint.h"
+#include "net/base/net_export.h"
 #include "net/quic/core/quic_connection.h"
 #include "net/quic/core/quic_protocol.h"
 #include "net/quic/core/quic_simple_buffer_allocator.h"
 #include "net/quic/core/quic_time.h"
 #include "net/udp/datagram_client_socket.h"
 
 namespace net {
 
 class QuicClock;
 class QuicRandom;
@@ skipping 14 matching lines @@
   const QuicClock* clock_;
   QuicRandom* random_generator_;
   SimpleBufferAllocator buffer_allocator_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumConnectionHelper);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CHROMIUM_CONNECTION_HELPER_H_