remove lambda expression in quic

net/quic/quic_received_packet_manager.cc

 // Copyright 2013 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_received_packet_manager.h"
 
+#include <limits>
+#include <utility>
+
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "net/base/linked_hash_map.h"
 #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;
@@ skipping 177 matching lines @@
 bool QuicReceivedPacketManager::IsMissing(
     QuicPacketSequenceNumber sequence_number) {
   return ContainsKey(ack_frame_.missing_packets, sequence_number);
 }
 
 bool QuicReceivedPacketManager::IsAwaitingPacket(
     QuicPacketSequenceNumber sequence_number) {
   return ::net::IsAwaitingPacket(ack_frame_, sequence_number);
 }
 
+namespace {
+struct isTooLarge {
+  explicit isTooLarge(QuicPacketSequenceNumber n) : largest_observed_(n) {}
+  QuicPacketSequenceNumber largest_observed_;
+
+  // Return true if the packet in p is too different from largest_observed_
+  // to express.
+  bool operator() (
+      const std::pair<QuicPacketSequenceNumber, QuicTime>& p) const {
+    return largest_observed_ - p.first >= numeric_limits<uint8>::max();
+  }
+};
+}  // namespace
+
 void QuicReceivedPacketManager::UpdateReceivedPacketInfo(
     QuicAckFrame* ack_frame, QuicTime approximate_now) {
   *ack_frame = ack_frame_;
   ack_frame->entropy_hash = EntropyHash(ack_frame_.largest_observed);
 
   if (time_largest_observed_ == QuicTime::Zero()) {
     // We have received no packets.
     ack_frame->delta_time_largest_observed = QuicTime::Delta::Infinite();
     return;
   }
 
   if (approximate_now < time_largest_observed_) {
     // Approximate now may well be "in the past".
     ack_frame->delta_time_largest_observed = QuicTime::Delta::Zero();
     return;
   }
 
   ack_frame->delta_time_largest_observed =
       approximate_now.Subtract(time_largest_observed_);
 
   // Remove all packets that are too far from largest_observed to express.
-  received_packet_times_.remove_if(
-      [this] (std::pair<QuicPacketSequenceNumber, QuicTime> p)
-      { return ack_frame_.largest_observed - p.first >=
-        numeric_limits<uint8>::max();});
+  received_packet_times_.remove_if(isTooLarge(ack_frame_.largest_observed));
 
   ack_frame->received_packet_times = received_packet_times_;
   received_packet_times_.clear();
 }
 
 bool QuicReceivedPacketManager::GenerateCongestionFeedback(
     QuicCongestionFeedbackFrame* feedback) {
   return receive_algorithm_->GenerateCongestionFeedback(feedback);
 }
 
@@ skipping 34 matching lines @@
              peer_least_packet_awaiting_ack_);
 }
 
 bool QuicReceivedPacketManager::HasNewMissingPackets() {
   return !ack_frame_.missing_packets.empty() &&
       (ack_frame_.largest_observed -
        *ack_frame_.missing_packets.rbegin()) <= kMaxPacketsAfterNewMissing;
 }
 
 }  // namespace net