Mojo C++ bindings: introduce an optional array to store transferred interface IDs in messages.

mojo/public/cpp/bindings/lib/serialization_context.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/public/cpp/bindings/lib/serialization_context.h"
 
 #include <limits>
 
 #include "base/logging.h"
-#include "mojo/public/cpp/bindings/associated_group_controller.h"
 #include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 namespace internal {
 
 SerializedHandleVector::SerializedHandleVector() {}
 
 SerializedHandleVector::~SerializedHandleVector() {
   for (auto handle : handles_) {
     if (handle.is_valid()) {
@@ skipping 22 matching lines @@
   DCHECK_LT(encoded_handle.value, handles_.size());
   return FetchAndReset(&handles_[encoded_handle.value]);
 }
 
 void SerializedHandleVector::Swap(std::vector<mojo::Handle>* other) {
   handles_.swap(*other);
 }
 
 SerializationContext::SerializationContext() {}
 
-SerializationContext::SerializationContext(
-    scoped_refptr<AssociatedGroupController> in_group_controller)
-    : group_controller(std::move(in_group_controller)) {}
-
 SerializationContext::~SerializationContext() {
   DCHECK(!custom_contexts || custom_contexts->empty());
 }
 
 }  // namespace internal
 }  // namespace mojo