Tab Audio Mirroring: WebContentsAudioInputStream is a new implementation which represents the lifet…

media/audio/audio_manager_base.h

Index: media/audio/audio_manager_base.h
diff --git a/media/audio/audio_manager_base.h b/media/audio/audio_manager_base.h
index 83ad98b6906ba64e1f5c3c535ac4857f85a1c3d6..2568e251f10515f4b322d11d97fedab31ffbfc15 100644
--- a/media/audio/audio_manager_base.h
+++ b/media/audio/audio_manager_base.h
@@ -28,6 +28,7 @@ namespace media {
 
 class AudioOutputDispatcher;
 class VirtualAudioInputStream;
+class VirtualAudioOutputStream;
 
 // AudioManagerBase provides AudioManager functions common for all platforms.
 class MEDIA_EXPORT AudioManagerBase : public AudioManager {
@@ -64,6 +65,12 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   virtual void ReleaseOutputStream(AudioOutputStream* stream);
   virtual void ReleaseInputStream(AudioInputStream* stream);
 
+  // Called internally by the browser-wide VirtualAudioInputStream after it has
+  // been closed.  Notifies all AudioDeviceListeners to re-create output
+  // streams and then deletes |stream|.
+  virtual void ReleaseVirtualInputStream(VirtualAudioInputStream* stream);
+  virtual void ReleaseVirtualOutputStream(VirtualAudioOutputStream* stream);
+
   void IncreaseActiveInputStreamCount();
   void DecreaseActiveInputStreamCount();