Fix net_export.h includes.

net/websockets/websocket_errors.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_WEBSOCKETS_WEBSOCKET_ERRORS_H_
 #define NET_WEBSOCKETS_WEBSOCKET_ERRORS_H_
 
 #include "net/base/net_errors.h"
+#include "net/base/net_export.h"
 
 namespace net {
 
 // Reason codes used with close messages. NoStatusReceived,
 // AbnormalClosure and TlsHandshake are special in that they
 // should never be sent on the wire; they are only used within the
 // implementation.
 enum WebSocketError {
   // Status codes in the range 0 to 999 are not used.
 
@@ skipping 25 matching lines @@
   kWebSocketErrorPrivateReservedMin = 4000,
   kWebSocketErrorPrivateReservedMax = 4999,
 };
 
 // Convert WebSocketError to net::Error defined in net/base/net_errors.h.
 NET_EXPORT_PRIVATE Error WebSocketErrorToNetError(WebSocketError error);
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_ERRORS_H_