message: Increase gru_test test size
diff: @@ -549,7 +549,7 @@ py_test(
  py_test(
  name = "gru_test",
  - size = "medium",
  + size = "large",
  srcs = ["layers/gru_test.py"],
  srcs_version = "PY2AND3",
  tags = ["notsan"], # http://b/62136390
  