message: call compat.as_str
diff: @@ -1606,7 +1606,7 @@ def _create_c_op(graph, node_def, inputs, control_inputs):
  compat.as_str(node_def.op),
  compat.as_str(node_def.name))
  if node_def.device:
  - c_api.TF_SetDevice(op_desc, node_def.device)
  + c_api.TF_SetDevice(op_desc, compat.as_str(node_def.device))
  # Add inputs
  for op_input in inputs:
  if isinstance(op_input, (list, tuple)):
  