Update from https://crrev.com/316786

net/quic/quic_received_packet_manager.cc

Index: net/quic/quic_received_packet_manager.cc
diff --git a/net/quic/quic_received_packet_manager.cc b/net/quic/quic_received_packet_manager.cc
index 38ceec68bb466d25ef7fbe1f54cc4d07db2e76cb..dcc7823835e16884077f967ae24be9896f0cd892 100644
--- a/net/quic/quic_received_packet_manager.cc
+++ b/net/quic/quic_received_packet_manager.cc
@@ -13,7 +13,6 @@
 #include "net/quic/crypto/crypto_protocol.h"
 #include "net/quic/quic_connection_stats.h"
 
-using std::make_pair;
 using std::max;
 using std::min;
 using std::numeric_limits;
@@ -81,13 +80,13 @@ void QuicReceivedPacketManager::EntropyTracker::RecordPacketEntropyHash(
   if (sequence_number > largest_observed_) {
     for (QuicPacketSequenceNumber i = 0;
          i < (sequence_number - largest_observed_ - 1); ++i) {
-      packets_entropy_.push_back(make_pair(0, false));
+      packets_entropy_.push_back(std::make_pair(0, false));
     }
-    packets_entropy_.push_back(make_pair(entropy_hash, true));
+    packets_entropy_.push_back(std::make_pair(entropy_hash, true));
     largest_observed_ = sequence_number;
   } else {
     packets_entropy_[sequence_number - first_gap_] =
-        make_pair(entropy_hash, true);
+        std::make_pair(entropy_hash, true);
     AdvanceFirstGapAndGarbageCollectEntropyMap();
   }
 
@@ -135,7 +134,6 @@ AdvanceFirstGapAndGarbageCollectEntropyMap() {
 QuicReceivedPacketManager::QuicReceivedPacketManager(QuicConnectionStats* stats)
     : peer_least_packet_awaiting_ack_(0),
       time_largest_observed_(QuicTime::Zero()),
-      receive_algorithm_(ReceiveAlgorithmInterface::Create()),
       stats_(stats) {
   ack_frame_.largest_observed = 0;
   ack_frame_.entropy_hash = 0;
@@ -178,9 +176,6 @@ void QuicReceivedPacketManager::RecordPacketReceived(
   entropy_tracker_.RecordPacketEntropyHash(sequence_number,
                                            header.entropy_hash);
 
-  receive_algorithm_->RecordIncomingPacket(
-      bytes, sequence_number, receipt_time);
-
   received_packet_times_.push_back(
       std::make_pair(sequence_number, receipt_time));
 
@@ -237,8 +232,8 @@ void QuicReceivedPacketManager::UpdateReceivedPacketInfo(
   // Remove all packets that are too far from largest_observed to express.
   received_packet_times_.remove_if(isTooLarge(ack_frame_.largest_observed));
 
-  ack_frame->received_packet_times = received_packet_times_;
-  received_packet_times_.clear();
+  ack_frame->received_packet_times.clear();
+  ack_frame->received_packet_times.swap(received_packet_times_);
 }
 
 QuicPacketEntropyHash QuicReceivedPacketManager::EntropyHash(