EDK: Move ref counting classes to mojo/edk/util.

mojo/edk/system/data_pipe.cc

 // Copyright 2013 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/edk/system/data_pipe.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <limits>
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/aligned_memory.h"
 #include "mojo/edk/system/awakable_list.h"
 #include "mojo/edk/system/channel.h"
 #include "mojo/edk/system/configuration.h"
 #include "mojo/edk/system/data_pipe_impl.h"
 #include "mojo/edk/system/incoming_endpoint.h"
 #include "mojo/edk/system/local_data_pipe_impl.h"
 #include "mojo/edk/system/memory.h"
 #include "mojo/edk/system/options_validation.h"
 #include "mojo/edk/system/remote_consumer_data_pipe_impl.h"
 #include "mojo/edk/system/remote_producer_data_pipe_impl.h"
 #include "mojo/edk/util/make_unique.h"
 
+using mojo::util::RefPtr;
+
 namespace mojo {
 namespace system {
 
 // static
 MojoCreateDataPipeOptions DataPipe::GetDefaultCreateOptions() {
   MojoCreateDataPipeOptions result = {
       static_cast<uint32_t>(sizeof(MojoCreateDataPipeOptions)),
       MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE,
       1u,
       static_cast<uint32_t>(
@@ skipping 765 matching lines @@
   SetProducerClosedNoLock();
 }
 
 void DataPipe::SetConsumerClosed() {
   MutexLocker locker(&mutex_);
   SetConsumerClosedNoLock();
 }
 
 }  // namespace system
 }  // namespace mojo