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

third_party/protobuf/examples/list_people.py

-#! /usr/bin/env python
-
-# See README.txt for information and build instructions.
-
-import addressbook_pb2
-import sys
-
-# Iterates though all people in the AddressBook and prints info about them.
-def ListPeople(address_book):
-  for person in address_book.people:
-    print "Person ID:", person.id
-    print "  Name:", person.name
-    if person.email != "":
-      print "  E-mail address:", person.email
-
-    for phone_number in person.phones:
-      if phone_number.type == addressbook_pb2.Person.MOBILE:
-        print "  Mobile phone #:",
-      elif phone_number.type == addressbook_pb2.Person.HOME:
-        print "  Home phone #:",
-      elif phone_number.type == addressbook_pb2.Person.WORK:
-        print "  Work phone #:",
-      print phone_number.number
-
-# Main procedure:  Reads the entire address book from a file and prints all
-#   the information inside.
-if len(sys.argv) != 2:
-  print "Usage:", sys.argv[0], "ADDRESS_BOOK_FILE"
-  sys.exit(-1)
-
-address_book = addressbook_pb2.AddressBook()
-
-# Read the existing address book.
-f = open(sys.argv[1], "rb")
-address_book.ParseFromString(f.read())
-f.close()
-
-ListPeople(address_book)