message: Add getCurrentTimeNanoseconds wrapper.
diff: @@ -1628,3 +1628,8 @@ inline WasmResult ContextBase::setEffectiveContext() {
  return proxy_setEffectiveContext(id_);
  }
  +inline uint64_t getCurrentTimeNanoseconds() {
  + uint64_t t;
  + CHECK_RESULT(proxy_getCurrentTimeNanoseconds(&t));
  + return t;
  +}
  