Method ValidateUTF8

cpp/src/arrow/array/array_binary_test.cc:477–479

  }

  Status ValidateUTF8(const Array& arr) {
    return checked_cast<const ArrayType&>(arr).ValidateUTF8();
  }

  Status ValidateUTF8(std::vector<std::string> values) {
    std::shared_ptr<Array> arr;