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

third_party/protobuf/python/google/protobuf/pyext/message_map_container.h

Index: third_party/protobuf/python/google/protobuf/pyext/message_map_container.h
diff --git a/third_party/protobuf/python/google/protobuf/pyext/message_map_container.h b/third_party/protobuf/python/google/protobuf/pyext/message_map_container.h
deleted file mode 100644
index 4ca0aecca4c72ad7c10e14c29fa0dbe7562d6173..0000000000000000000000000000000000000000
--- a/third_party/protobuf/python/google/protobuf/pyext/message_map_container.h
+++ /dev/null
@@ -1,117 +0,0 @@
-// 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:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef GOOGLE_PROTOBUF_PYTHON_CPP_MESSAGE_MAP_CONTAINER_H__
-#define GOOGLE_PROTOBUF_PYTHON_CPP_MESSAGE_MAP_CONTAINER_H__
-
-#include <Python.h>
-
-#include <memory>
-#ifndef _SHARED_PTR_H
-#include <google/protobuf/stubs/shared_ptr.h>
-#endif
-
-#include <google/protobuf/descriptor.h>
-
-namespace google {
-namespace protobuf {
-
-class Message;
-
-using internal::shared_ptr;
-
-namespace python {
-
-struct CMessage;
-
-struct MessageMapContainer {
-  PyObject_HEAD;
-
-  // This is the top-level C++ Message object that owns the whole
-  // proto tree.  Every Python MessageMapContainer holds a
-  // reference to it in order to keep it alive as long as there's a
-  // Python object that references any part of the tree.
-  shared_ptr<Message> owner;
-
-  // Pointer to the C++ Message that contains this container.  The
-  // MessageMapContainer does not own this pointer.
-  Message* message;
-
-  // Weak reference to a parent CMessage object (i.e. may be NULL.)
-  //
-  // Used to make sure all ancestors are also mutable when first
-  // modifying the container.
-  CMessage* parent;
-
-  // Pointer to the parent's descriptor that describes this
-  // field.  Used together with the parent's message when making a
-  // default message instance mutable.
-  // The pointer is owned by the global DescriptorPool.
-  const FieldDescriptor* parent_field_descriptor;
-  const FieldDescriptor* key_field_descriptor;
-  const FieldDescriptor* value_field_descriptor;
-
-  // A callable that is used to create new child messages.
-  PyObject* subclass_init;
-
-  // A dict mapping Message* -> CMessage.
-  PyObject* message_dict;
-
-  // We bump this whenever we perform a mutation, to invalidate existing
-  // iterators.
-  uint64 version;
-};
-
-extern PyTypeObject MessageMapContainer_Type;
-extern PyTypeObject MessageMapIterator_Type;
-
-namespace message_map_container {
-
-// Builds a MessageMapContainer object, from a parent message and a
-// field descriptor.
-extern PyObject* NewContainer(CMessage* parent,
-                              const FieldDescriptor* parent_field_descriptor,
-                              PyObject* concrete_class);
-
-// Releases the messages in the container to a new message.
-//
-// Returns 0 on success, -1 on failure.
-int Release(MessageMapContainer* self);
-
-// Set the owner field of self and any children of self.
-void SetOwner(MessageMapContainer* self,
-              const shared_ptr<Message>& new_owner);
-
-}  // namespace message_map_container
-}  // namespace python
-}  // namespace protobuf
-
-}  // namespace google
-#endif  // GOOGLE_PROTOBUF_PYTHON_CPP_MESSAGE_MAP_CONTAINER_H__