Add GetBoundAddress to PPB_UDPSocket_Private

ppapi/thunk/ppb_udp_socket_private_thunk.cc

Index: ppapi/thunk/ppb_udp_socket_private_thunk.cc
diff --git a/ppapi/thunk/ppb_udp_socket_private_thunk.cc b/ppapi/thunk/ppb_udp_socket_private_thunk.cc
index 60e95fe9f7e974f8a15752d97079504645f09103..36a8fa6a4c3618851d109e226cf5c9304c161276 100644
--- a/ppapi/thunk/ppb_udp_socket_private_thunk.cc
+++ b/ppapi/thunk/ppb_udp_socket_private_thunk.cc
@@ -38,6 +38,14 @@ int32_t Bind(PP_Resource udp_socket,
   return MayForceCallback(callback, result);
 }
 
+PP_Bool GetBoundAddress(PP_Resource udp_socket,
+                        PP_NetAddress_Private* addr) {
+  EnterResource<PPB_UDPSocket_Private_API> enter(udp_socket, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->GetBoundAddress(addr);
+}
+
 int32_t RecvFrom(PP_Resource udp_socket,
                  char* buffer,
                  int32_t num_bytes,
@@ -81,6 +89,7 @@ const PPB_UDPSocket_Private g_ppb_udp_socket_thunk = {
   &Create,
   &IsUDPSocket,
   &Bind,
+  &GetBoundAddress,
   &RecvFrom,
   &GetRecvFromAddress,
   &SendTo,