message: Append device name in executor logging
diff: @@ -1674,7 +1674,8 @@ void ExecutorState::Process(TaggedNode tagged_node, int64 scheduled_usec) {
  if (vlog_) {
  VLOG(1) << "Process node: " << id << " step " << params.step_id << " "
  - << SummarizeNode(*node) << " is dead: " << tagged_node.is_dead;
  + << SummarizeNode(*node) << " is dead: " << tagged_node.is_dead
  + << " device: " << device->name();
  }
  Entry* input_tensors = GetInputTensors(input_frame, input_iter);
  @@ -1735,7 +1736,8 @@ void ExecutorState::Process(TaggedNode tagged_node, int64 scheduled_usec) {
  VLOG(2) << "Async kernel done: " << state->item->node->id()
  << " step " << step_id_ << " "
  << SummarizeNode(*state->item->node)
  - << " is dead: " << state->tagged_node.is_dead;
  + << " is dead: " << state->tagged_node.is_dead
  + << " device: " << device->name();
  }
  // Clears inputs.
  @@ -1788,7 +1790,8 @@ void ExecutorState::Process(TaggedNode tagged_node, int64 scheduled_usec) {
  if (vlog_) {
  VLOG(2) << "Synchronous kernel done: " << id << " step "
  << params.step_id << " " << SummarizeNode(*node)
  - << " is dead: " << tagged_node.is_dead;
  + << " is dead: " << tagged_node.is_dead
  + << " device: " << device->name();
  }
  // Clears inputs.
  