Revert of Fixing scenario where track is rejected and later un-rejected.

talk/app/webrtc/mediastreamhandler.h

Index: talk/app/webrtc/mediastreamhandler.h
diff --git a/talk/app/webrtc/mediastreamhandler.h b/talk/app/webrtc/mediastreamhandler.h
index f79eff367a8de5b2e09c83759b1c367b0a10ec57..801648dc047bf11720c4460cc7d8f6a6824fd425 100644
--- a/talk/app/webrtc/mediastreamhandler.h
+++ b/talk/app/webrtc/mediastreamhandler.h
@@ -51,8 +51,6 @@
   TrackHandler(MediaStreamTrackInterface* track, uint32 ssrc);
   virtual ~TrackHandler();
   virtual void OnChanged();
-  // Associate |track_| with |ssrc_|. Can be called multiple times.
-  virtual void Start() = 0;
   // Stop using |track_| on this PeerConnection.
   virtual void Stop() = 0;
 
@@ -103,7 +101,7 @@
                          uint32 ssrc,
                          AudioProviderInterface* provider);
   virtual ~LocalAudioTrackHandler();
-  void Start() override;
+
   void Stop() override;
 
  protected:
@@ -129,7 +127,6 @@
                           uint32 ssrc,
                           AudioProviderInterface* provider);
   virtual ~RemoteAudioTrackHandler();
-  void Start() override;
   void Stop() override;
 
  protected:
@@ -153,7 +150,6 @@
                          uint32 ssrc,
                          VideoProviderInterface* provider);
   virtual ~LocalVideoTrackHandler();
-  void Start() override;
   void Stop() override;
 
  protected:
@@ -174,7 +170,6 @@
                           uint32 ssrc,
                           VideoProviderInterface* provider);
   virtual ~RemoteVideoTrackHandler();
-  void Start() override;
   void Stop() override;
 
  protected:
@@ -197,7 +192,6 @@
 
   virtual void AddAudioTrack(AudioTrackInterface* audio_track, uint32 ssrc) = 0;
   virtual void AddVideoTrack(VideoTrackInterface* video_track, uint32 ssrc) = 0;
-  virtual void RestartAllTracks() = 0;
 
   virtual void RemoveTrack(MediaStreamTrackInterface* track);
   void OnChanged() override;
@@ -220,7 +214,6 @@
 
   void AddAudioTrack(AudioTrackInterface* audio_track, uint32 ssrc) override;
   void AddVideoTrack(VideoTrackInterface* video_track, uint32 ssrc) override;
-  void RestartAllTracks() override;
 };
 
 class RemoteMediaStreamHandler : public MediaStreamHandler {
@@ -231,7 +224,6 @@
   ~RemoteMediaStreamHandler();
   void AddAudioTrack(AudioTrackInterface* audio_track, uint32 ssrc) override;
   void AddVideoTrack(VideoTrackInterface* video_track, uint32 ssrc) override;
-  void RestartAllTracks() override;
 };
 
 // Container for MediaStreamHandlers of currently known local and remote
@@ -264,10 +256,6 @@
   void RemoveRemoteTrack(MediaStreamInterface* stream,
                          MediaStreamTrackInterface* track);
 
-  // Make all remote track handlers reassociate their corresponding tracks
-  // with their corresponding SSRCs.
-  void RestartAllRemoteTracks();
-
   // Remove all TrackHandlers for tracks in |stream| and make sure
   // the audio_provider and video_provider is notified that the tracks has been
   // removed.
@@ -285,10 +273,6 @@
   void RemoveLocalTrack(MediaStreamInterface* stream,
                         MediaStreamTrackInterface* track);
 
-  // Make all local track handlers reassociate their corresponding tracks
-  // with their corresponding SSRCs.
-  void RestartAllLocalTracks();
-
  private:
   typedef std::list<MediaStreamHandler*> StreamHandlerList;
   MediaStreamHandler* FindStreamHandler(const StreamHandlerList& handlers,