message: Better deprecation message for --input_type[s].
diff: @@ -65,10 +65,12 @@ bool ParseTocoFlagsFromCommandLineFlags(
  "is used."),
  Flag("input_type", parsed_flags.input_type.bind(),
  parsed_flags.input_type.default_value(),
  - "Deprecated old name of inference_input_type."),
  + "Deprecated ambiguous flag that set both --input_data_types and "
  + "--inference_input_type."),
  Flag("input_types", parsed_flags.input_types.bind(),
  parsed_flags.input_types.default_value(),
  - "Deprecated old name of inference_input_type. Was meant to be a "
  + "Deprecated ambiguous flag that set both --input_data_types and "
  + "--inference_input_type. Was meant to be a "
  "comma-separated list, but this was deprecated before "
  "multiple-input-types was ever properly supported."),
  @@ -140,7 +142,6 @@ void ReadTocoFlagsFromCommandLineFlags(const ParsedTocoFlags& parsed_toco_flags,
  << #name; \
  } \
  } while (false)
  -
  #define READ_TOCO_FLAG(name, requirement) \
  ENFORCE_FLAG_REQUIREMENT(name, requirement); \
  do { \
  @@ -174,14 +175,26 @@ void ReadTocoFlagsFromCommandLineFlags(const ParsedTocoFlags& parsed_toco_flags,
  // Deprecated flag handling.
  if (parsed_toco_flags.input_type.specified()) {
  - LOG(WARNING) << "--input_type is deprecated. Use --inference_input_type.";
  + LOG(WARNING)
  + << "--input_type is deprecated. It was an ambiguous flag that set both "
  + "--input_data_types and --inference_input_type. If you are trying "
  + "to complement the input file with information about the type of "
  + "input arrays, use --input_data_type. If you are trying to control "
  + "the quantization/dequantization of real-numbers input arrays in "
  + "the output file, use --inference_input_type.";
  toco::IODataType input_type;
  QCHECK(toco::IODataType_Parse(parsed_toco_flags.input_type.value(),
  &input_type));
  toco_flags->set_inference_input_type(input_type);
  }
  if (parsed_toco_flags.input_types.specified()) {
  - LOG(WARNING) << "--input_types is deprecated. Use --inference_input_type.";
  + LOG(WARNING)
  + << "--input_types is deprecated. It was an ambiguous flag that set "
  + "both --input_data_types and --inference_input_type. If you are "
  + "trying to complement the input file with information about the "
  + "type of input arrays, use --input_data_type. If you are trying to "
  + "control the quantization/dequantization of real-numbers input "
  + "arrays in the output file, use --inference_input_type.";
  std::vector<string> input_types =
  absl::StrSplit(parsed_toco_flags.input_types.value(), ',');
  QCHECK(!input_types.empty());
  