Add GetDebugState() in SendAlgorithmInterface().

net/quic/core/quic_sent_packet_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/core/quic_sent_packet_manager.h"
 
 #include <algorithm>
+#include <string>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "net/quic/chromium/quic_utils_chromium.h"
 #include "net/quic/core/congestion_control/general_loss_algorithm.h"
 #include "net/quic/core/congestion_control/pacing_sender.h"
 #include "net/quic/core/crypto/crypto_protocol.h"
 #include "net/quic/core/proto/cached_network_parameters.pb.h"
 #include "net/quic/core/quic_bug_tracker.h"
 #include "net/quic/core/quic_connection_stats.h"
@@ skipping 896 matching lines @@
 }
 
 QuicByteCount QuicSentPacketManager::GetCongestionWindowInBytes() const {
   return send_algorithm_->GetCongestionWindow();
 }
 
 QuicPacketCount QuicSentPacketManager::GetSlowStartThresholdInTcpMss() const {
   return send_algorithm_->GetSlowStartThreshold() / kDefaultTCPMSS;
 }
 
+std::string QuicSentPacketManager::GetDebugState() const {
+  return send_algorithm_->GetDebugState();
+}
+
 void QuicSentPacketManager::CancelRetransmissionsForStream(
     QuicStreamId stream_id) {
   unacked_packets_.CancelRetransmissionsForStream(stream_id);
   if (delegate_ != nullptr) {
     return;
   }
   PendingRetransmissionMap::iterator it = pending_retransmissions_.begin();
   while (it != pending_retransmissions_.end()) {
     if (unacked_packets_.HasRetransmittableFrames(it->first)) {
       ++it;
@@ skipping 80 matching lines @@
 TransmissionInfo* QuicSentPacketManager::GetMutableTransmissionInfo(
     QuicPacketNumber packet_number) {
   return unacked_packets_.GetMutableTransmissionInfo(packet_number);
 }
 
 void QuicSentPacketManager::RemoveObsoletePackets() {
   unacked_packets_.RemoveObsoletePackets();
 }
 
 }  // namespace net