mojo: MessageReceiver*::AcceptWithResponder() now take a unique_ptr to the responder

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

 // Copyright 2015 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/control_message_proxy.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 67 matching lines @@
   auto params_ptr = interface_control::RunMessageParams::New();
   params_ptr->input = std::move(input_ptr);
   size_t size = PrepareToSerialize<interface_control::RunMessageParamsDataView>(
       params_ptr, &context);
   MessageBuilder builder(interface_control::kRunMessageId,
                          Message::kFlagExpectsResponse, size, 0);
 
   interface_control::internal::RunMessageParams_Data* params = nullptr;
   Serialize<interface_control::RunMessageParamsDataView>(
       params_ptr, builder.buffer(), &params, &context);
-  MessageReceiver* responder = new RunResponseForwardToCallback(callback);
-  if (!receiver->AcceptWithResponder(builder.message(), responder))
-    delete responder;
+  std::unique_ptr<MessageReceiver> responder =
+      base::MakeUnique<RunResponseForwardToCallback>(callback);
+  ignore_result(
+      receiver->AcceptWithResponder(builder.message(), std::move(responder)));
 }
 
 Message ConstructRunOrClosePipeMessage(
     interface_control::RunOrClosePipeInputPtr input_ptr) {
   SerializationContext context;
 
   auto params_ptr = interface_control::RunOrClosePipeMessageParams::New();
   params_ptr->input = std::move(input_ptr);
 
   size_t size = PrepareToSerialize<
@@ skipping 78 matching lines @@
 }
 
 void ControlMessageProxy::OnConnectionError() {
   encountered_error_ = true;
   if (!run_loop_quit_closure_.is_null())
     RunFlushForTestingClosure();
 }
 
 }  // namespace internal
 }  // namespace mojo