message: Add definitions for OpKernelContext::Params constants.
diff: @@ -255,6 +255,9 @@ Status OpKernelConstruction::allocate_persistent(
  // OpKernelContext -----------------------------------------------------------
  +const int OpKernelContext::Params::kNeverForward;
  +const int OpKernelContext::Params::kNoReservation;
  +
  OpKernelContext::OpKernelContext(Params* params)
  : OpKernelContext(
  params, static_cast<int>(params->op_kernel->output_types().size())) {}
  