Removing obselete TODO

net/quic/core/quic_connection.cc

 // Copyright (c) 2012 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_connection.h"
 
 #include <string.h>
 #include <sys/types.h>
 
 #include <algorithm>
@@ skipping 1149 matching lines @@
   // Now that we have received an ack, we might be able to send packets which
   // are queued locally, or drain streams which are blocked.
   if (defer_send_in_response_to_packets_) {
     send_alarm_->Update(clock_->ApproximateNow(), QuicTime::Delta::Zero());
   } else {
     WriteAndBundleAcksIfNotBlocked();
   }
 }
 
 void QuicConnection::SendVersionNegotiationPacket() {
-  // TODO(alyssar): implement zero server state negotiation.
   pending_version_negotiation_packet_ = true;
   if (writer_->IsWriteBlocked()) {
     visitor_->OnWriteBlocked();
     return;
   }
   DVLOG(1) << ENDPOINT << "Sending version negotiation packet: {"
            << QuicVersionVectorToString(framer_.supported_versions()) << "}";
   std::unique_ptr<QuicEncryptedPacket> version_packet(
       packet_generator_.SerializeVersionNegotiationPacket(
           framer_.supported_versions()));
@@ skipping 1365 matching lines @@
 
 void QuicConnection::CheckIfApplicationLimited() {
   if (queued_packets_.empty() &&
       !sent_packet_manager_->HasPendingRetransmissions() &&
       !visitor_->WillingAndAbleToWrite()) {
     sent_packet_manager_->OnApplicationLimited();
   }
 }
 
 }  // namespace net