Add extra QUIC_BUG logging in QuicPacketCreator. No functional change. Not flag protected.

net/quic/quic_packet_creator.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/quic_packet_creator.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 100 matching lines @@
   have_diversification_nonce_ = true;
   memcpy(&diversification_nonce_, nonce, sizeof(diversification_nonce_));
 }
 
 void QuicPacketCreator::UpdatePacketNumberLength(
     QuicPacketNumber least_packet_awaited_by_peer,
     QuicPacketCount max_packets_in_flight) {
   if (FLAGS_quic_simple_packet_number_length && !queued_frames_.empty()) {
     // Don't change creator state if there are frames queued.
     QUIC_BUG << "Called UpdatePacketNumberLength with " << queued_frames_.size()
-             << " queued_frames.";
+             << " queued_frames.  First frame type:"
+             << queued_frames_.front().type
+             << " last frame type:" << queued_frames_.back().type;
     return;
   }
 
   DCHECK_LE(least_packet_awaited_by_peer, packet_.packet_number + 1);
   const QuicPacketNumber current_delta =
       packet_.packet_number + 1 - least_packet_awaited_by_peer;
   const uint64_t delta = max(current_delta, max_packets_in_flight);
   if (FLAGS_quic_simple_packet_number_length) {
     packet_.packet_number_length =
         QuicFramer::GetMinSequenceNumberLength(delta * 4);
@@ skipping 583 matching lines @@
   if (bit_mask_ == 0) {
     bit_bucket_ = random_->RandUint64();
     bit_mask_ = 1;
   }
   bool result = ((bit_bucket_ & bit_mask_) != 0);
   bit_mask_ <<= 1;
   return result;
 }
 
 }  // namespace net