Cache the value of GetMaxPlaintextSize in QuicPacketCreator. No functional change.

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>
@@ skipping 1721 matching lines @@
   if (!HasQueuedData() && !retransmission_alarm_->IsSet()) {
     QuicTime rto_timeout = sent_packet_manager_.GetRetransmissionTime();
     if (rto_timeout.IsInitialized()) {
       retransmission_alarm_->Set(rto_timeout);
     }
   }
 }
 
 void QuicConnection::SetEncrypter(EncryptionLevel level,
                                   QuicEncrypter* encrypter) {
-  framer_.SetEncrypter(level, encrypter);
+  packet_generator_.SetEncrypter(level, encrypter);
   if (level == ENCRYPTION_FORWARD_SECURE) {
     has_forward_secure_encrypter_ = true;
     first_required_forward_secure_packet_ =
         sequence_number_of_last_sent_packet_ +
         // 3 times the current congestion window (in slow start) should cover
         // about two full round trips worth of packets, which should be
         // sufficient.
         3 * sent_packet_manager_.EstimateMaxPacketsInFlight(
             max_packet_length());
   }
@@ skipping 386 matching lines @@
   }
   for (const QuicFrame& frame : retransmittable_frames->frames()) {
     if (frame.type == CONNECTION_CLOSE_FRAME) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net