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

mojo/edk/system/remote_producer_data_pipe_impl.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/edk/system/remote_producer_data_pipe_impl.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
 #include "mojo/edk/system/channel.h"
 #include "mojo/edk/system/channel_endpoint.h"
 #include "mojo/edk/system/configuration.h"
 #include "mojo/edk/system/data_pipe.h"
 #include "mojo/edk/system/message_in_transit.h"
 #include "mojo/edk/system/message_in_transit_queue.h"
 #include "mojo/edk/system/remote_consumer_data_pipe_impl.h"
 #include "mojo/edk/system/remote_data_pipe_ack.h"
 
+using mojo::util::RefPtr;
+
 namespace mojo {
 namespace system {
 
 namespace {
 
 bool ValidateIncomingMessage(size_t element_num_bytes,
                              size_t capacity_num_bytes,
                              size_t current_num_bytes,
                              const MessageInTransit* message) {
   // We should only receive endpoint client messages.
@@ skipping 425 matching lines @@
   // If the consumer is still open and we still have data, we have to keep the
   // buffer around. Currently, we won't free it even if it empties later. (We
   // could do this -- requiring a check on every read -- but that seems to be
   // optimizing for the uncommon case.)
   if (!consumer_open() || !current_num_bytes_)
     DestroyBuffer();
 }
 
 }  // namespace system
 }  // namespace mojo