AllowBroadcast() is exposed to NaCl.

ppapi/proxy/ppb_udp_socket_private_proxy.cc

Index: ppapi/proxy/ppb_udp_socket_private_proxy.cc
diff --git a/ppapi/proxy/ppb_udp_socket_private_proxy.cc b/ppapi/proxy/ppb_udp_socket_private_proxy.cc
index 1e3a002cfb83c9bbc3e40806a6a79d9bcf862fd5..3763c7894f8817d4fc71c480b9a65c8b5ffe6426 100644
--- a/ppapi/proxy/ppb_udp_socket_private_proxy.cc
+++ b/ppapi/proxy/ppb_udp_socket_private_proxy.cc
@@ -7,6 +7,8 @@
 #include <map>
 
 #include "base/logging.h"
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/private/ppb_udp_socket_private.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_proxy_delegate.h"
@@ -29,6 +31,8 @@ class UDPSocket : public UDPSocketPrivateImpl {
   UDPSocket(const HostResource& resource, uint32 socket_id);
   virtual ~UDPSocket();
 
+  virtual void SendSetSocketFeature(PP_UDPSocketFeature_Private name,
+                                    PP_Var value) OVERRIDE;
   virtual void SendBind(const PP_NetAddress_Private& addr) OVERRIDE;
   virtual void SendRecvFrom(int32_t num_bytes) OVERRIDE;
   virtual void SendSendTo(const std::string& data,
@@ -53,6 +57,21 @@ UDPSocket::~UDPSocket() {
   Close();
 }
 
+void UDPSocket::SendSetSocketFeature(PP_UDPSocketFeature_Private name,
+                                     PP_Var value) {
+  switch (name) {
+    case PP_UDPSOCKETFEATURE_ADDRESS_REUSE:
+    case PP_UDPSOCKETFEATURE_BROADCAST:
+      DCHECK_EQ(PP_VARTYPE_BOOL, value.type);
+      SendToBrowser(new PpapiHostMsg_PPBUDPSocket_SetBoolSocketFeature(
+          API_ID_PPB_UDPSOCKET_PRIVATE, socket_id_,
+          static_cast<int32_t>(name), PP_ToBool(value.value.as_bool)));
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
 void UDPSocket::SendBind(const PP_NetAddress_Private& addr) {
   SendToBrowser(new PpapiHostMsg_PPBUDPSocket_Bind(
       API_ID_PPB_UDPSOCKET_PRIVATE, socket_id_, addr));