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

mojo/edk/system/proxy_message_pipe_endpoint.h

 // 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.
 
 #ifndef MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
 #define MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
 
 #include "mojo/edk/system/message_in_transit.h"
 #include "mojo/edk/system/message_pipe_endpoint.h"
-#include "mojo/edk/system/ref_ptr.h"
+#include "mojo/edk/util/ref_ptr.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace system {
 
 class ChannelEndpoint;
 class LocalMessagePipeEndpoint;
 class MessagePipe;
 
 // A |ProxyMessagePipeEndpoint| is an endpoint which delegates everything to a
 // |ChannelEndpoint|, which may be co-owned by a |Channel|. Like any
 // |MessagePipeEndpoint|, a |ProxyMessagePipeEndpoint| is owned by a
 // |MessagePipe|.
 //
 // For example, a |MessagePipe| with one endpoint local and the other endpoint
 // remote consists of a |LocalMessagePipeEndpoint| and a
 // |ProxyMessagePipeEndpoint|, with only the local endpoint being accessible via
 // a |MessagePipeDispatcher|.
 class ProxyMessagePipeEndpoint final : public MessagePipeEndpoint {
  public:
-  explicit ProxyMessagePipeEndpoint(RefPtr<ChannelEndpoint>&& channel_endpoint);
+  explicit ProxyMessagePipeEndpoint(
+      util::RefPtr<ChannelEndpoint>&& channel_endpoint);
   ~ProxyMessagePipeEndpoint() override;
 
   // Returns |channel_endpoint_| and resets |channel_endpoint_| to null. This
   // may be called at most once, after which |Close()| need not be called.
   //
   // Note: The returned |ChannelEndpoint| must have its client changed while
   // still under |MessagePipe|'s lock (which this must have also been called
   // under).
-  RefPtr<ChannelEndpoint> ReleaseChannelEndpoint();
+  util::RefPtr<ChannelEndpoint> ReleaseChannelEndpoint();
 
   // |MessagePipeEndpoint| implementation:
   Type GetType() const override;
   bool OnPeerClose() override;
   void EnqueueMessage(std::unique_ptr<MessageInTransit> message) override;
   void Close() override;
 
  private:
   void DetachIfNecessary();
 
-  RefPtr<ChannelEndpoint> channel_endpoint_;
+  util::RefPtr<ChannelEndpoint> channel_endpoint_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ProxyMessagePipeEndpoint);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_