Bump vendoring, move to proto3 release.

recipe_engine/third_party/google/protobuf/internal/reflection_test.py

 #! /usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Protocol Buffers - Google's data interchange format
 # Copyright 2008 Google Inc.  All rights reserved.
 # https://developers.google.com/protocol-buffers/
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
@@ skipping 954 matching lines @@
 
     # Test clearing.
     proto.ClearField('repeated_nested_message')
     self.assertTrue(not proto.repeated_nested_message)
     self.assertEqual(0, len(proto.repeated_nested_message))
 
     # Test constructing an element while adding it.
     proto.repeated_nested_message.add(bb=23)
     self.assertEqual(1, len(proto.repeated_nested_message))
     self.assertEqual(23, proto.repeated_nested_message[0].bb)
+    self.assertRaises(TypeError, proto.repeated_nested_message.add, 23)
 
   def testRepeatedCompositeRemove(self):
     proto = unittest_pb2.TestAllTypes()
 
     self.assertEqual(0, len(proto.repeated_nested_message))
     m0 = proto.repeated_nested_message.add()
     # Need to set some differentiating variable so m0 != m1 != m2:
     m0.bb = len(proto.repeated_nested_message)
     m1 = proto.repeated_nested_message.add()
     m1.bb = len(proto.repeated_nested_message)
@@ skipping 1989 matching lines @@
         'bar {'
         '  baz {'
         '    deep: 4'
         '  }'
         '}')
     text_format.Merge(msg_str, msg)
     self.assertEqual(msg.bar.baz.deep, 4)
 
 if __name__ == '__main__':
   unittest.main()