Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/examples/list_people.cc

-// See README.txt for information and build instructions.
-
-#include <iostream>
-#include <fstream>
-#include <string>
-#include "addressbook.pb.h"
-using namespace std;
-
-// Iterates though all people in the AddressBook and prints info about them.
-void ListPeople(const tutorial::AddressBook& address_book) {
-  for (int i = 0; i < address_book.people_size(); i++) {
-    const tutorial::Person& person = address_book.people(i);
-
-    cout << "Person ID: " << person.id() << endl;
-    cout << "  Name: " << person.name() << endl;
-    if (person.email() != "") {
-      cout << "  E-mail address: " << person.email() << endl;
-    }
-
-    for (int j = 0; j < person.phones_size(); j++) {
-      const tutorial::Person::PhoneNumber& phone_number = person.phones(j);
-
-      switch (phone_number.type()) {
-        case tutorial::Person::MOBILE:
-          cout << "  Mobile phone #: ";
-          break;
-        case tutorial::Person::HOME:
-          cout << "  Home phone #: ";
-          break;
-        case tutorial::Person::WORK:
-          cout << "  Work phone #: ";
-          break;
-      }
-      cout << phone_number.number() << endl;
-    }
-  }
-}
-
-// Main function:  Reads the entire address book from a file and prints all
-//   the information inside.
-int main(int argc, char* argv[]) {
-  // Verify that the version of the library that we linked against is
-  // compatible with the version of the headers we compiled against.
-  GOOGLE_PROTOBUF_VERIFY_VERSION;
-
-  if (argc != 2) {
-    cerr << "Usage:  " << argv[0] << " ADDRESS_BOOK_FILE" << endl;
-    return -1;
-  }
-
-  tutorial::AddressBook address_book;
-
-  {
-    // Read the existing address book.
-    fstream input(argv[1], ios::in | ios::binary);
-    if (!address_book.ParseFromIstream(&input)) {
-      cerr << "Failed to parse address book." << endl;
-      return -1;
-    }
-  }
-
-  ListPeople(address_book);
-
-  // Optional:  Delete all global objects allocated by libprotobuf.
-  google::protobuf::ShutdownProtobufLibrary();
-
-  return 0;
-}