Remove unnecessary casts in AudioManagerDeleter on Mac.

media/audio/audio_manager.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 "media/audio/audio_manager.h"
 
 #include <stdint.h>
 
+#include <utility>

[Max Morin, 2017/02/16 15:10:51]

Linter wanted it for move.

+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/alias.h"
 #include "base/debug/crash_logging.h"
 #include "base/debug/dump_without_crashing.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 261 matching lines @@
   }
 
 #if defined(OS_MACOSX)
   // If we are on Mac, tasks after this point are not executed, hence this is
   // the only chance to delete the audio manager (which on Mac lives on the
   // main browser thread instead of a dedicated audio thread). If we don't
   // delete here, the CoreAudio thread can keep providing callbacks, which
   // uses a state that is destroyed in ~BrowserMainLoop().
   // See http://crbug.com/623703 for more details.
   DCHECK(instance->GetTaskRunner()->BelongsToCurrentThread());
-  AudioManagerMac* mac_instance =
-      static_cast<AudioManagerMac*>(const_cast<AudioManager*>(instance));
-  delete mac_instance;
+  delete instance;
 #else
   // AudioManager must be destroyed on the audio thread.
   if (!instance->GetTaskRunner()->DeleteSoon(FROM_HERE, instance)) {
     LOG(WARNING) << "Failed to delete AudioManager instance.";
   }
 #endif
 }
 
 // Forward declaration of the platform specific AudioManager factory function.
 ScopedAudioManagerPtr CreateAudioManager(
@@ skipping 77 matching lines @@
   return GetHelper()->app_name();
 }
 #endif
 
 // static
 AudioManager* AudioManager::Get() {
   return g_last_created;
 }
 
 }  // namespace media