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

third_party/protobuf/examples/add_person.py

-#! /usr/bin/env python
-
-# See README.txt for information and build instructions.
-
-import addressbook_pb2
-import sys
-
-# This function fills in a Person message based on user input.
-def PromptForAddress(person):
-  person.id = int(raw_input("Enter person ID number: "))
-  person.name = raw_input("Enter name: ")
-
-  email = raw_input("Enter email address (blank for none): ")
-  if email != "":
-    person.email = email
-
-  while True:
-    number = raw_input("Enter a phone number (or leave blank to finish): ")
-    if number == "":
-      break
-
-    phone_number = person.phones.add()
-    phone_number.number = number
-
-    type = raw_input("Is this a mobile, home, or work phone? ")
-    if type == "mobile":
-      phone_number.type = addressbook_pb2.Person.MOBILE
-    elif type == "home":
-      phone_number.type = addressbook_pb2.Person.HOME
-    elif type == "work":
-      phone_number.type = addressbook_pb2.Person.WORK
-    else:
-      print "Unknown phone type; leaving as default value."
-
-# Main procedure:  Reads the entire address book from a file,
-#   adds one person based on user input, then writes it back out to the same
-#   file.
-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.
-try:
-  f = open(sys.argv[1], "rb")
-  address_book.ParseFromString(f.read())
-  f.close()
-except IOError:
-  print sys.argv[1] + ": File not found.  Creating a new file."
-
-# Add an address.
-PromptForAddress(address_book.people.add())
-
-# Write the new address book back to disk.
-f = open(sys.argv[1], "wb")
-f.write(address_book.SerializeToString())
-f.close()