Remove obsolete atomic debugging checks.

media/audio/audio_output_controller.h

 // 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.
 
 #ifndef MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_
 
 #include "base/atomic_ref_count.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
@@ skipping 219 matching lines @@
   AudioOutputStream* diverting_to_stream_;
 
   // The current volume of the audio stream.
   double volume_;
 
   // |state_| is written on the audio manager thread and is read on the
   // hardware audio thread. These operations need to be locked. But lock
   // is not required for reading on the audio manager thread.
   State state_;
 
-  // Atomic ref count indicating when when we're in the middle of handling an
-  // OnMoreIOData() callback.  Will be CHECK'd to find crashes.
-  // TODO(dalecurtis): Remove debug helpers for http://crbug.com/349651
-  base::AtomicRefCount not_currently_in_on_more_io_data_;
-
   // SyncReader is used only in low latency mode for synchronous reading.
   SyncReader* const sync_reader_;
 
   // The message loop of audio manager thread that this object runs on.
   const scoped_refptr<base::SingleThreadTaskRunner> message_loop_;
 
 #if defined(AUDIO_POWER_MONITORING)
   // Scans audio samples from OnMoreIOData() as input to compute power levels.
   AudioPowerMonitor power_monitor_;
 #endif
 
   // Flags when we've asked for a stream to start but it never did.
   base::AtomicRefCount on_more_io_data_called_;
   scoped_ptr<base::OneShotTimer<AudioOutputController> > wedge_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioOutputController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_