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

mojo/edk/system/proxy_message_pipe_endpoint.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/proxy_message_pipe_endpoint.h"
 
 #include <string.h>
 
 #include <utility>
 
 #include "base/logging.h"
 #include "mojo/edk/system/channel_endpoint.h"
 #include "mojo/edk/system/local_message_pipe_endpoint.h"
 #include "mojo/edk/system/message_pipe_dispatcher.h"
 
+using mojo::util::RefPtr;
+
 namespace mojo {
 namespace system {
 
 ProxyMessagePipeEndpoint::ProxyMessagePipeEndpoint(
     RefPtr<ChannelEndpoint>&& channel_endpoint)
     : channel_endpoint_(std::move(channel_endpoint)) {}
 
 ProxyMessagePipeEndpoint::~ProxyMessagePipeEndpoint() {
   DCHECK(!channel_endpoint_);
 }
@@ skipping 28 matching lines @@
 
 void ProxyMessagePipeEndpoint::DetachIfNecessary() {
   if (channel_endpoint_) {
     channel_endpoint_->DetachFromClient();
     channel_endpoint_ = nullptr;
   }
 }
 
 }  // namespace system
 }  // namespace mojo