Add FrameAndMuteInfo to AudioConferenceMixer

webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h

Index: webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h
diff --git a/webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h b/webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h
index 22c6a2353518c683ac87fccfdcde5cd9f328c530..e726c08f75aa41744bdd942cf80f16168ecfa498 100644
--- a/webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h
+++ b/webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.h
@@ -25,7 +25,13 @@ namespace webrtc {
 class AudioProcessing;
 class CriticalSectionWrapper;
 
-typedef std::list<AudioFrame*> AudioFrameList;
+struct FrameAndMuteInfo {
+  FrameAndMuteInfo(AudioFrame* f, bool m) : frame(f), muted(m) {}
+  AudioFrame* frame;
+  bool muted;
+};
+
+typedef std::list<FrameAndMuteInfo> AudioFrameList;
 typedef std::list<MixerParticipant*> MixerParticipantList;
 
 // Cheshire cat implementation of MixerParticipant's non virtual functions.