Fix a QUIC bug where a crypto packet was never removed from the

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 6dc30a5f9ff5f1a2170f42caa7c93b3b72b22b47..97214f3788edcb2a4b2b29d026bca6b6875687d3 100644
--- a/net/quic/quic_sent_packet_manager.cc
+++ b/net/quic/quic_sent_packet_manager.cc
@@ -261,8 +261,14 @@ void QuicSentPacketManager::NeuterUnencryptedPackets() {
       // they are not retransmitted or considered lost from a congestion control
       // perspective.
       pending_retransmissions_.erase(it->first);
-      unacked_packets_.NeuterPacket(it->first);
       unacked_packets_.SetNotPending(it->first);
+      // TODO(ianswett): Clean this up so UnackedPacketMap maintains the correct
+      // invariants between the various transmissions for NeuterPacket.
+      SequenceNumberSet all_transmissions = *it->second.all_transmissions;
+      for (SequenceNumberSet::const_iterator all_it = all_transmissions.begin();
+           all_it != all_transmissions.end(); ++all_it) {
+        unacked_packets_.NeuterPacket(*all_it);
+      }
     }
   }
 }