message: Fix runtime failure in executor_benchmark.
diff: @@ -466,10 +466,10 @@ static void BM_FeedInputFetchOutput(int iters) {
  // z = x + y: x and y are provided as benchmark inputs. z is the
  // output of the benchmark. Conceptually, the caller is "a", the
  // benchmark is "b".
  - Node* x = test::graph::Recv(g, "x", "float", "a", 1, "b");
  - Node* y = test::graph::Recv(g, "y", "float", "a", 1, "b");
  + Node* x = test::graph::Recv(g, "x", "float", ALICE, 1, BOB);
  + Node* y = test::graph::Recv(g, "y", "float", ALICE, 1, BOB);
  Node* sum = test::graph::Add(g, x, y);
  - Node* z = test::graph::Send(g, sum, "z", "b", 1, "a");
  + Node* z = test::graph::Send(g, sum, "z", BOB, 1, ALICE);
  Tensor val(DT_FLOAT, TensorShape({}));
  val.scalar<float>()() = 3.14;
  #ifdef PLATFORM_GOOGLE
  