Convert QUIC's SentEntropyManager to use a deque instead of a map in

net/quic/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/quic_connection.h"
 
 #include <string.h>
 #include <sys/types.h>
 #include <algorithm>
 #include <iterator>
@@ skipping 1558 matching lines @@
     delete packet.packet;
     return true;
   }
   queued_packet.type = QUEUED;
   queued_packets_.push_back(queued_packet);
   return false;
 }
 
 void QuicConnection::UpdateStopWaiting(QuicStopWaitingFrame* stop_waiting) {
   stop_waiting->least_unacked = GetLeastUnacked();
-  stop_waiting->entropy_hash = sent_entropy_manager_.EntropyHash(
+  stop_waiting->entropy_hash = sent_entropy_manager_.GetCumulativeEntropy(
       stop_waiting->least_unacked - 1);
 }
 
 void QuicConnection::SendPing() {
   if (retransmission_alarm_->IsSet()) {
     return;
   }
   if (version() == QUIC_VERSION_16) {
     // TODO(rch): remove this when we remove version 15 and 16.
     // This is a horrible hideous hack which we should not support.
@@ skipping 424 matching lines @@
   // If we changed the generator's batch state, restore original batch state.
   if (!already_in_batch_mode_) {
     DVLOG(1) << "Leaving Batch Mode.";
     connection_->packet_generator_.FinishBatchOperations();
   }
   DCHECK_EQ(already_in_batch_mode_,
             connection_->packet_generator_.InBatchMode());
 }
 
 }  // namespace net