Convert mojo::system::Dispatcher to use our new refcounting stuff (instead of base's).

mojo/edk/embedder/system_impl_private_entrypoints.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/embedder/embedder_internal.h"
 #include "mojo/edk/system/core.h"
 #include "mojo/edk/system/dispatcher.h"
+#include "mojo/edk/system/ref_ptr.h"
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/functions.h"
 #include "mojo/public/c/system/message_pipe.h"
 #include "mojo/public/platform/native/system_impl_private.h"
 
 using mojo::embedder::internal::g_core;
 using mojo::system::Core;
 using mojo::system::Dispatcher;
 using mojo::system::MakeUserPointer;
+using mojo::system::RefPtr;
 
 // Definitions of the system functions, but with an explicit parameter for the
 // core object rather than using the default singleton. Also includes functions
 // for manipulating core objects.
 extern "C" {
 
 MojoSystemImpl MojoSystemImplGetDefaultImpl() {
   return static_cast<MojoSystemImpl>(g_core);
 }
 
@@ skipping 13 matching lines @@
   if (handle == MOJO_HANDLE_INVALID)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   Core* to_core = static_cast<Core*>(to_system);
   if (to_core == nullptr)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   if (result_handle == nullptr)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
-  scoped_refptr<Dispatcher> d;
+  RefPtr<Dispatcher> d;
   MojoResult result = from_core->GetAndRemoveDispatcher(handle, &d);
   if (result != MOJO_RESULT_OK)
     return result;
 
-  MojoHandle created_handle = to_core->AddDispatcher(d);
+  MojoHandle created_handle = to_core->AddDispatcher(d.get());
   if (created_handle == MOJO_HANDLE_INVALID) {
     // The handle has been lost, unfortunately. There's no guarentee we can put
     // it back where it came from, or get the original ID back. Holding locks
     // for multiple cores risks deadlock, so that isn't a solution. This case
     // should not happen for reasonable uses of this API, however.
     LOG(ERROR) << "Could not transfer handle";
     d->Close();
     return MOJO_RESULT_RESOURCE_EXHAUSTED;
   }
 
@@ skipping 184 matching lines @@
                          MakeUserPointer(buffer), flags);
 }
 
 MojoResult MojoSystemImplUnmapBuffer(MojoSystemImpl system, void* buffer) {
   mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
   DCHECK(core);
   return core->UnmapBuffer(MakeUserPointer(buffer));
 }
 
 }  // extern "C"