Fix net_export.h includes.

net/spdy/hpack/hpack_static_table.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_SPDY_HPACK_STATIC_TABLE_H_
 #define NET_SPDY_HPACK_STATIC_TABLE_H_
 
 #include <stddef.h>
 
+#include "net/base/net_export.h"
 #include "net/spdy/hpack/hpack_header_table.h"
 
 namespace net {
 
 struct HpackStaticEntry;
 
 // HpackStaticTable provides |static_entries_| and |static_index_| for HPACK
 // encoding and decoding contexts.  Once initialized, an instance is read only
 // and may be accessed only through its const interface.  Such an instance may
 // be shared accross multiple HPACK contexts.
@@ skipping 23 matching lines @@
 
  private:
   HpackHeaderTable::EntryTable static_entries_;
   HpackHeaderTable::UnorderedEntrySet static_index_;
   HpackHeaderTable::NameToEntryMap static_name_index_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_HPACK_STATIC_TABLE_H_