relnote: Add num_connections_ in quic_time_wait_list_manager to record

net/tools/quic/quic_time_wait_list_manager.cc

Index: net/tools/quic/quic_time_wait_list_manager.cc
diff --git a/net/tools/quic/quic_time_wait_list_manager.cc b/net/tools/quic/quic_time_wait_list_manager.cc
index 68d1b9ec39485276e5ef89ed91a5d94929d7575d..c34aa1bb0517040d8cbce6d56920a53549855cc3 100644
--- a/net/tools/quic/quic_time_wait_list_manager.cc
+++ b/net/tools/quic/quic_time_wait_list_manager.cc
@@ -88,7 +88,8 @@ QuicTimeWaitListManager::QuicTimeWaitListManager(
           helper->CreateAlarm(new ConnectionIdCleanUpAlarm(this))),
       clock_(helper->GetClock()),
       writer_(writer),
-      visitor_(visitor) {
+      visitor_(visitor),
+      num_connections_(0) {
   SetConnectionIdCleanUpAlarm();
 }
 
@@ -117,6 +118,7 @@ void QuicTimeWaitListManager::AddConnectionIdToTimeWait(
     num_packets = it->second.num_packets;
     delete it->second.close_packet;
     connection_id_map_.erase(it);
+    --num_connections_;
   }
   TrimTimeWaitListIfNeeded();
   DCHECK_LT(num_connections(),
@@ -124,6 +126,7 @@ void QuicTimeWaitListManager::AddConnectionIdToTimeWait(
   ConnectionIdData data(num_packets, version, clock_->ApproximateNow(),
                         close_packet, connection_rejected_statelessly);
   connection_id_map_.insert(std::make_pair(connection_id, data));
+  ++num_connections_;
   if (new_connection_id) {
     visitor_->OnConnectionAddedToTimeWaitList(connection_id);
   }
@@ -288,6 +291,7 @@ bool QuicTimeWaitListManager::MaybeExpireOldestConnection(
   const QuicConnectionId connection_id = it->first;
   delete it->second.close_packet;
   connection_id_map_.erase(it);
+  --num_connections_;
   visitor_->OnConnectionRemovedFromTimeWaitList(connection_id);
   return true;
 }