SyncSocket Transit Descriptor - refactoring

content/browser/renderer_host/media/audio_renderer_host.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/media/audio_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram.h"
@@ skipping 220 matching lines @@
   if (!entry->shared_memory()->ShareToProcess(PeerHandle(),
                                               &foreign_memory_handle)) {
     // If we failed to map and share the shared memory then close the audio
     // stream and send an error message.
     ReportErrorAndClose(entry->stream_id());
     return;
   }
 
   AudioSyncReader* reader = static_cast<AudioSyncReader*>(entry->reader());
 
-#if defined(OS_WIN)
-  base::SyncSocket::Handle foreign_socket_handle;
-#else
-  base::FileDescriptor foreign_socket_handle;
-#endif
+  base::SyncSocket::TransitDescriptor socket_descriptor;
 
   // If we failed to prepare the sync socket for the renderer then we fail
   // the construction of audio stream.
-  if (!reader->PrepareForeignSocketHandle(PeerHandle(),
-                                          &foreign_socket_handle)) {
+  if (!reader->PrepareForeignSocket(PeerHandle(), &socket_descriptor)) {
     ReportErrorAndClose(entry->stream_id());
     return;
   }
 
   Send(new AudioMsg_NotifyStreamCreated(
-      entry->stream_id(),
-      foreign_memory_handle,
-      foreign_socket_handle,
+      entry->stream_id(), foreign_memory_handle, socket_descriptor,
       entry->shared_memory()->requested_size()));
 }
 
 void AudioRendererHost::DoNotifyStreamStateChanged(int stream_id,
                                                    bool is_playing) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   AudioEntry* const entry = LookupById(stream_id);
   if (!entry)
     return;
@@ skipping 227 matching lines @@
 
   AudioEntryMap::const_iterator i = audio_entries_.find(stream_id);
   return i != audio_entries_.end() ? i->second : NULL;
 }
 
 bool AudioRendererHost::HasActiveAudio() {
   return !base::AtomicRefCountIsZero(&num_playing_streams_);
 }
 
 }  // namespace content