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

third_party/protobuf/examples/ListPeople.java

-// See README.txt for information and build instructions.
-
-import com.example.tutorial.AddressBookProtos.AddressBook;
-import com.example.tutorial.AddressBookProtos.Person;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.PrintStream;
-
-class ListPeople {
-  // Iterates though all people in the AddressBook and prints info about them.
-  static void Print(AddressBook addressBook) {
-    for (Person person: addressBook.getPeopleList()) {
-      System.out.println("Person ID: " + person.getId());
-      System.out.println("  Name: " + person.getName());
-      if (!person.getEmail().isEmpty()) {
-        System.out.println("  E-mail address: " + person.getEmail());
-      }
-
-      for (Person.PhoneNumber phoneNumber : person.getPhonesList()) {
-        switch (phoneNumber.getType()) {
-          case MOBILE:
-            System.out.print("  Mobile phone #: ");
-            break;
-          case HOME:
-            System.out.print("  Home phone #: ");
-            break;
-          case WORK:
-            System.out.print("  Work phone #: ");
-            break;
-        }
-        System.out.println(phoneNumber.getNumber());
-      }
-    }
-  }
-
-  // Main function:  Reads the entire address book from a file and prints all
-  //   the information inside.
-  public static void main(String[] args) throws Exception {
-    if (args.length != 1) {
-      System.err.println("Usage:  ListPeople ADDRESS_BOOK_FILE");
-      System.exit(-1);
-    }
-
-    // Read the existing address book.
-    AddressBook addressBook =
-      AddressBook.parseFrom(new FileInputStream(args[0]));
-
-    Print(addressBook);
-  }
-}