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

media/audio/openbsd/audio_manager_openbsd.h

Index: media/audio/openbsd/audio_manager_openbsd.h
diff --git a/media/audio/openbsd/audio_manager_openbsd.h b/media/audio/openbsd/audio_manager_openbsd.h
index fa49203d80445c2dce227e0fc9c505a5e14c69ce..cd316d83d5345801e408b902243dc3f0b02cbc36 100644
--- a/media/audio/openbsd/audio_manager_openbsd.h
+++ b/media/audio/openbsd/audio_manager_openbsd.h
@@ -20,21 +20,25 @@ class MEDIA_EXPORT AudioManagerOpenBSD : public AudioManagerBase {
   // 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);
 };