AllowBroadcast() is exposed to NaCl.

ppapi/shared_impl/private/udp_socket_private_impl.cc

Index: ppapi/shared_impl/private/udp_socket_private_impl.cc
diff --git a/ppapi/shared_impl/private/udp_socket_private_impl.cc b/ppapi/shared_impl/private/udp_socket_private_impl.cc
index 9b509e1f307cf8daf413908e531a4a7b27012ce3..bf2b5ebfc3310bf0f772d3648a5baa7ffc7cb235 100644
--- a/ppapi/shared_impl/private/udp_socket_private_impl.cc
+++ b/ppapi/shared_impl/private/udp_socket_private_impl.cc
@@ -40,6 +40,23 @@ UDPSocketPrivateImpl::AsPPB_UDPSocket_Private_API() {
   return this;
 }
 
+int32_t UDPSocketPrivateImpl::SetSocketFeature(
+    PP_UDPSocketFeature_Private name,
+    PP_Var value,
+    scoped_refptr<TrackedCallback> callback) {
+  if (bound_ || closed_)
+    return PP_ERROR_FAILED;
+  if (TrackedCallback::IsPending(setsocketfeature_callback_))
+    return PP_ERROR_INPROGRESS;
+
+  setsocketfeature_callback_ = callback;
+
+  // Send the request, the browser will call us back via
+  // SetSocketFeatureACK.
+  SendSetSocketFeature(name, value);
+  return PP_OK_COMPLETIONPENDING;
+}
+
 int32_t UDPSocketPrivateImpl::Bind(const PP_NetAddress_Private* addr,
                                    scoped_refptr<TrackedCallback> callback) {
   if (!addr)
@@ -124,11 +141,21 @@ void UDPSocketPrivateImpl::Close() {
 
   socket_id_ = 0;
 
+  PostAbortIfNecessary(&setsocketfeature_callback_);
   PostAbortIfNecessary(&bind_callback_);
   PostAbortIfNecessary(&recvfrom_callback_);
   PostAbortIfNecessary(&sendto_callback_);
 }
 
+void UDPSocketPrivateImpl::OnSetSocketFeatureCompleted(bool succeeded) {
+  if (!TrackedCallback::IsPending(setsocketfeature_callback_)) {
+    NOTREACHED();
+    return;
+  }
+  TrackedCallback::ClearAndRun(&setsocketfeature_callback_,
+      succeeded ? PP_OK : PP_ERROR_FAILED);
+}
+
 void UDPSocketPrivateImpl::OnBindCompleted(
     bool succeeded,
     const PP_NetAddress_Private& addr) {