Adding AddTrack/RemoveTrack to native PeerConnection API.

talk/app/webrtc/rtpsender.h

Index: talk/app/webrtc/rtpsender.h
diff --git a/talk/app/webrtc/rtpsender.h b/talk/app/webrtc/rtpsender.h
index d5f88a941add3df7e8a2bcdc3efe0a0ab62eb073..766aa4c0f18605287c9ece33e06119302bf68467 100644
--- a/talk/app/webrtc/rtpsender.h
+++ b/talk/app/webrtc/rtpsender.h
@@ -78,6 +78,11 @@ class AudioRtpSender : public ObserverInterface,
                  AudioProviderInterface* provider,
                  StatsCollector* stats);
 
+  // Randomly generates stream_id.
+  AudioRtpSender(AudioTrackInterface* track,
+                 AudioProviderInterface* provider,
+                 StatsCollector* stats);
+
   // Randomly generates id and stream_id.
   AudioRtpSender(AudioProviderInterface* provider, StatsCollector* stats);
 
@@ -136,6 +141,9 @@ class VideoRtpSender : public ObserverInterface,
                  const std::string& stream_id,
                  VideoProviderInterface* provider);
 
+  // Randomly generates stream_id.
+  VideoRtpSender(VideoTrackInterface* track, VideoProviderInterface* provider);
+
   // Randomly generates id and stream_id.
   explicit VideoRtpSender(VideoProviderInterface* provider);