Experimental: Unmute Audio During Tab Sourced Desktop Share

media/audio/audio_source_diverter.h

Index: media/audio/audio_source_diverter.h
diff --git a/media/audio/audio_source_diverter.h b/media/audio/audio_source_diverter.h
index 787ddec7867dfd693ce04623ca1bb23d4ca2c949..734f16014d30e5b951ec6cd0d16e742e78219cfa 100644
--- a/media/audio/audio_source_diverter.h
+++ b/media/audio/audio_source_diverter.h
@@ -6,6 +6,7 @@
 #define MEDIA_AUDIO_AUDIO_SOURCE_DIVERTER_H_
 
 #include "media/base/media_export.h"
+#include "media/audio/virtual_audio_output_stream.h"
 
 // Audio sources may optionally implement AudioSourceDiverter to temporarily
 // divert audio data to an alternate AudioOutputStream.  This allows the audio
@@ -31,7 +32,10 @@ public:
   // responsible for making sure the stream is closed, perhaps asynchronously.
   virtual void StopDiverting() = 0;
 
-protected:
+  virtual void StartDuplicating(AudioPushSink* sink) = 0;
+  virtual void StopDuplicating(AudioPushSink* sink) = 0;
+
+ protected:
   virtual ~AudioSourceDiverter() {}
 };