Tracks all open input streams in AudioManagerBase.

media/audio/audio_manager_base.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_MANAGER_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
 #include <memory>
 #include <string>
+#include <unordered_set>
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_output_dispatcher.h"
@@ skipping 133 matching lines @@
 
   // Number of currently open output streams.
   int num_output_streams_;
 
   // Number of currently open input streams.
   int num_input_streams_;
 
   // Track output state change listeners.
   base::ObserverList<AudioDeviceListener> output_listeners_;
 
+  // Contains currently open fake input/output streams.
+  // TODO(alokp): Remove this after tracking down streams that are not closed
+  // before shutdown: crbug.com/608049.
+  std::unordered_set<AudioOutputStream*> fake_output_streams_;
+  std::unordered_set<AudioInputStream*> fake_input_streams_;
+
   // Map of cached AudioOutputDispatcher instances.  Must only be touched
   // from the audio thread (no locking).
   AudioOutputDispatchers output_dispatchers_;
 
   // Proxy for creating AudioLog objects.
   AudioLogFactory* const audio_log_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_