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

webrtc/call/call.cc

Index: webrtc/call/call.cc
diff --git a/webrtc/call/call.cc b/webrtc/call/call.cc
index 2c80ccff0dc038b7e23ddafc28f8b598bda3667e..d1b201841861edb178d8e4c4b62fd2db1dc36ee0 100644
--- a/webrtc/call/call.cc
+++ b/webrtc/call/call.cc
@@ -77,6 +77,8 @@ class Call : public webrtc::Call, public PacketReceiver {
       const webrtc::Call::Config::BitrateConfig& bitrate_config) override;
   void SignalNetworkState(NetworkState state) override;
 
+  void OnPacketSent(const SentPacket& sent_packet) override;
+
  private:
   DeliveryStatus DeliverRtcp(MediaType media_type, const uint8_t* packet,
                              size_t length);
@@ -410,6 +412,10 @@ void Call::SignalNetworkState(NetworkState state) {
   }
 }
 
+void Call::OnPacketSent(const SentPacket& sent_packet) {
+  channel_group_->OnPacketSent(sent_packet);
+}
+
 void Call::ConfigureSync(const std::string& sync_group) {
   // Set sync only if there was no previous one.
   if (config_.voice_engine == nullptr || sync_group.empty())