AllowBroadcast() is exposed to NaCl.

ppapi/cpp/private/udp_socket_private.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 PPAPI_CPP_PRIVATE_UDP_SOCKET_PRIVATE_H_
 #define PPAPI_CPP_PRIVATE_UDP_SOCKET_PRIVATE_H_
 
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/private/ppb_udp_socket_private.h"
 #include "ppapi/cpp/resource.h"
 
 namespace pp {
 
 class CompletionCallback;
 class InstanceHandle;
+class Var;
 
 class UDPSocketPrivate : public Resource {
  public:
   explicit UDPSocketPrivate(const InstanceHandle& instance);
 
   // Returns true if the required interface is available.
   static bool IsAvailable();
 
+  int32_t SetSocketFeature(PP_UDPSocketFeature_Private name, const Var& value);
   int32_t Bind(const PP_NetAddress_Private* addr,
                const CompletionCallback& callback);
   bool GetBoundAddress(PP_NetAddress_Private* addr);
   int32_t RecvFrom(char* buffer,
                    int32_t num_bytes,
                    const CompletionCallback& callback);
   bool GetRecvFromAddress(PP_NetAddress_Private* addr);
   int32_t SendTo(const char* buffer,
                  int32_t num_bytes,
                  const PP_NetAddress_Private* addr,
                  const CompletionCallback& callback);
   void Close();
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_PRIVATE_UDP_SOCKET_PRIVATE_H_