VideoTrackAdapter: Add passing frames monitor, notify MSVCS -> MSVTrack(s)

content/renderer/media/media_stream_track.cc

Index: content/renderer/media/media_stream_track.cc
diff --git a/content/renderer/media/media_stream_track.cc b/content/renderer/media/media_stream_track.cc
index 529bc384e894be95dbe6b39a37286e25e296566d..eb207cb9279030605885ccf10301c6237dd69ef4 100644
--- a/content/renderer/media/media_stream_track.cc
+++ b/content/renderer/media/media_stream_track.cc
@@ -20,7 +20,8 @@ MediaStreamTrack* MediaStreamTrack::GetTrack(
 MediaStreamTrack::MediaStreamTrack(
     webrtc::MediaStreamTrackInterface* track, bool is_local_track)
     : track_(track),
-      is_local_track_(is_local_track) {
+      muted_state_(false),
+      is_local_track_(is_local_track){
 }
 
 MediaStreamTrack::~MediaStreamTrack() {
@@ -31,6 +32,10 @@ void MediaStreamTrack::SetEnabled(bool enabled) {
     track_->set_enabled(enabled);
 }
 
+void MediaStreamTrack::SetMutedState(bool muted_state) {
+  muted_state_ = muted_state;
+}
+
 void MediaStreamTrack::Stop() {
   // Stop means that a track should be stopped permanently. But
   // since there is no proper way of doing that on a remote track, we can