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

mojo/edk/system/core.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/core.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
 #include "mojo/edk/embedder/platform_shared_buffer.h"
 #include "mojo/edk/embedder/platform_support.h"
 #include "mojo/edk/system/async_waiter.h"
 #include "mojo/edk/system/configuration.h"
 #include "mojo/edk/system/data_pipe.h"
 #include "mojo/edk/system/data_pipe_consumer_dispatcher.h"
 #include "mojo/edk/system/data_pipe_producer_dispatcher.h"
 #include "mojo/edk/system/dispatcher.h"
 #include "mojo/edk/system/handle_signals_state.h"
 #include "mojo/edk/system/memory.h"
 #include "mojo/edk/system/message_pipe.h"
 #include "mojo/edk/system/message_pipe_dispatcher.h"
 #include "mojo/edk/system/shared_buffer_dispatcher.h"
 #include "mojo/edk/system/waiter.h"
 #include "mojo/public/c/system/macros.h"
 #include "mojo/public/cpp/system/macros.h"
 
+using mojo::util::RefPtr;
+
 namespace mojo {
 namespace system {
 
 // Implementation notes
 //
 // Mojo primitives are implemented by the singleton |Core| object. Most calls
 // are for a "primary" handle (the first argument). |Core::GetDispatcher()| is
 // used to look up a |Dispatcher| object for a given handle. That object
 // implements most primitives for that object. The wait primitives are not
 // attached to objects and are implemented by |Core| itself.
@@ skipping 560 matching lines @@
   if (signals_states) {
     for (; i < num_handles; i++)
       signals_states[i] = dispatchers[i]->GetHandleSignalsState();
   }
 
   return rv;
 }
 
 }  // namespace system
 }  // namespace mojo