third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/python/google/protobuf/message_factory.py

Index: third_party/protobuf/python/google/protobuf/message_factory.py
diff --git a/third_party/protobuf/python/google/protobuf/message_factory.py b/third_party/protobuf/python/google/protobuf/message_factory.py
index 1b059d130b5ab6ab4ada1a087723dc1d33c94c47..8ab1c513d1c1464db825a4f330493981a3c08cc0 100644
--- a/third_party/protobuf/python/google/protobuf/message_factory.py
+++ b/third_party/protobuf/python/google/protobuf/message_factory.py
@@ -103,13 +103,8 @@ class MessageFactory(object):
     result = {}
     for file_name in files:
       file_desc = self.pool.FindFileByName(file_name)
-      for name, msg in file_desc.message_types_by_name.items():
-        if file_desc.package:
-          full_name = '.'.join([file_desc.package, name])
-        else:
-          full_name = msg.name
-        result[full_name] = self.GetPrototype(
-            self.pool.FindMessageTypeByName(full_name))
+      for desc in file_desc.message_types_by_name.values():
+        result[desc.full_name] = self.GetPrototype(desc)
 
       # While the extension FieldDescriptors are created by the descriptor pool,
       # the python classes created in the factory need them to be registered
@@ -120,7 +115,7 @@ class MessageFactory(object):
       # ignore the registration if the original was the same, or raise
       # an error if they were different.
 
-      for name, extension in file_desc.extensions_by_name.items():
+      for extension in file_desc.extensions_by_name.values():
         if extension.containing_type.full_name not in self._classes:
           self.GetPrototype(extension.containing_type)
         extended_class = self._classes[extension.containing_type.full_name]