AllowBroadcast() is exposed to NaCl.

ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc

 // 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.
 //
 // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 //
 // Automatically generated code.  See srpcgen.py
 //
 // NaCl Simple Remote Procedure Call interface abstractions.
 
@@ skipping 3152 matching lines @@
   NaClSrpcError retval;
   retval = NaClSrpcInvokeBySignature(
       channel,
       "PPB_UDPSocket_Private_IsUDPSocket:i:i",
       resource_id,
       is_udp_socket_private
   );
   return retval;
 }
 
+NaClSrpcError PpbUDPSocketPrivateRpcClient::PPB_UDPSocket_Private_SetSocketFeature(
+    NaClSrpcChannel* channel,
+    PP_Resource udp_socket,
+    int32_t name,
+    nacl_abi_size_t value_bytes, char* value,
+    int32_t* pp_error)  {
+  VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
+         ("%s: PPAPI calls are not supported off the main thread\n",
+          __FUNCTION__));
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPB_UDPSocket_Private_SetSocketFeature:iiC:i",
+      udp_socket,
+      name,
+      value_bytes, value,
+      pp_error
+  );
+  return retval;
+}
+
 NaClSrpcError PpbUDPSocketPrivateRpcClient::PPB_UDPSocket_Private_Bind(
     NaClSrpcChannel* channel,
     PP_Resource udp_socket,
     nacl_abi_size_t addr_bytes, char* addr,
     int32_t callback_id,
     int32_t* pp_error)  {
   VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
          ("%s: PPAPI calls are not supported off the main thread\n",
           __FUNCTION__));
   NaClSrpcError retval;
@@ skipping 832 matching lines @@
       channel,
       "PPB_Zoom_ZoomLimitsChanged:idd:",
       instance,
       minimum_factor,
       maximum_factor
   );
   return retval;
 }