Move some generic functions to AudioManagerBase to be inherited by platform-specific AudioManager***

media/audio/openbsd/audio_manager_openbsd.h

 // Copyright (c) 2011 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_OPENBSD_AUDIO_MANAGER_OPENBSD_H_
 #define MEDIA_AUDIO_OPENBSD_AUDIO_MANAGER_OPENBSD_H_
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "media/audio/audio_manager_base.h"
 
 class MEDIA_EXPORT AudioManagerOpenBSD : public AudioManagerBase {
  public:
   AudioManagerOpenBSD();
 
   // Call before using a newly created AudioManagerOpenBSD instance.
   virtual void Init() OVERRIDE;
 
   // Implementation of AudioManager.
   virtual bool HasAudioOutputDevices() OVERRIDE;
   virtual bool HasAudioInputDevices() OVERRIDE;
-  virtual AudioOutputStream* MakeAudioOutputStream(
-      const AudioParameters& params) OVERRIDE;
-  virtual AudioInputStream* MakeAudioInputStream(
-      const AudioParameters& params, const std::string& device_id) OVERRIDE;
-
   virtual void MuteAll() OVERRIDE;
   virtual void UnMuteAll() OVERRIDE;
 
-  virtual void ReleaseOutputStream(AudioOutputStream* stream);
+  // Implementation of AudioManagerBase.
+  virtual AudioOutputStream* MakeLinearOutputStream(
+      const AudioParameters& params) OVERRIDE;
+  virtual AudioOutputStream* MakeLowLatencyOutputStream(
+      const AudioParameters& params) OVERRIDE;
+  virtual AudioInputStream* MakeLinearInputStream(
+      const AudioParameters& params, const std::string& device_id) OVERRIDE;
+  virtual AudioInputStream* MakeLowLatencyInputStream(
+      const AudioParameters& params, const std::string& device_id) OVERRIDE;
 
  protected:
   virtual ~AudioManagerOpenBSD();
 
  private:
-  std::set<AudioOutputStream*> active_streams_;
+  // Called by MakeLinearOutputStream and MakeLowLatencyOutputStream.
+  AudioOutputStream* MakeOutputStream(const AudioParameters& params);
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerOpenBSD);
 };
 
 #endif  // MEDIA_AUDIO_OPENBSD_AUDIO_MANAGER_OPENBSD_H_