Wire up transport sequence number / send time callbacks to webrtc via libjingle.

webrtc/video_engine/vie_channel_group.h

Index: webrtc/video_engine/vie_channel_group.h
diff --git a/webrtc/video_engine/vie_channel_group.h b/webrtc/video_engine/vie_channel_group.h
index c2ae12745cbc739423e920c85e83b17fcb7e9502..bb1a08ef856b373bc358880db5b70c815e428318 100644
--- a/webrtc/video_engine/vie_channel_group.h
+++ b/webrtc/video_engine/vie_channel_group.h
@@ -18,6 +18,7 @@
 
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/scoped_ptr.h"
+#include "webrtc/base/socket.h"
 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/video_receive_stream.h"
 #include "webrtc/video_send_stream.h"
@@ -82,6 +83,8 @@ class ChannelGroup : public BitrateObserver {
                         uint8_t fraction_loss,
                         int64_t rtt) override;
 
+  void OnSentPacket(const rtc::SentPacket& sent_packet);
+
  private:
   typedef std::map<int, ViEChannel*> ChannelMap;
   typedef std::map<int, ViEEncoder*> EncoderMap;