Adding logging to quic for tracegraf

net/quic/quic_sent_packet_manager.cc

Index: net/quic/quic_sent_packet_manager.cc
diff --git a/net/quic/quic_sent_packet_manager.cc b/net/quic/quic_sent_packet_manager.cc
index 5ca809d532a92d335abcaf5de7be827a7365bfd5..b5ca9fe9e51f08f7f93e6fe3aeb4ce2a9643c3d7 100644
--- a/net/quic/quic_sent_packet_manager.cc
+++ b/net/quic/quic_sent_packet_manager.cc
@@ -155,6 +155,13 @@ void QuicSentPacketManager::OnRetransmittedPacket(
   unacked_packets_.OnRetransmittedPacket(old_sequence_number,
                                          new_sequence_number,
                                          transmission_type);
+
+  if (debug_delegate_ != NULL) {
+    debug_delegate_->OnRetransmittedPacket(old_sequence_number,
+        new_sequence_number,
+        transmission_type,
+        clock_->ApproximateNow());
+  }
 }
 
 void QuicSentPacketManager::OnIncomingAck(
@@ -188,6 +195,14 @@ void QuicSentPacketManager::OnIncomingAck(
     consecutive_tlp_count_ = 0;
     consecutive_crypto_retransmission_count_ = 0;
   }
+
+  if (debug_delegate_ != NULL) {
+    debug_delegate_->OnIncomingAck(received_info,
+        ack_receive_time,
+        largest_observed_,
+        largest_observed_acked,
+        GetLeastUnackedSentPacket());
+  }
 }
 
 void QuicSentPacketManager::MaybeInvokeCongestionEvent(
@@ -498,6 +513,10 @@ bool QuicSentPacketManager::OnPacketSent(
                                     has_retransmittable_data);
   unacked_packets_.SetSent(sequence_number, sent_time, bytes, in_flight);
 
+  if (debug_delegate_ != NULL) {
+    debug_delegate_->OnSentPacket(sequence_number, sent_time, bytes);
+  }
+
   // Reset the retransmission timer anytime a pending packet is sent.
   return in_flight;
 }