Remove PathCloseFrame, QuicPathId, DefaultPathId and InvalidPathId.

net/tools/quic/quic_dispatcher.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/tools/quic/quic_dispatcher.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "net/quic/core/crypto/quic_random.h"
@@ skipping 608 matching lines @@
     const QuicWindowUpdateFrame& /*frame*/) {
   DCHECK(false);
   return false;
 }
 
 bool QuicDispatcher::OnBlockedFrame(const QuicBlockedFrame& frame) {
   DCHECK(false);
   return false;
 }
 
-bool QuicDispatcher::OnPathCloseFrame(const QuicPathCloseFrame& frame) {
-  DCHECK(false);
-  return false;
-}
-
 void QuicDispatcher::OnPacketComplete() {
   DCHECK(false);
 }
 
 void QuicDispatcher::OnExpiredPackets(
     QuicConnectionId connection_id,
     BufferedPacketList early_arrived_packets) {
   time_wait_list_manager_->AddConnectionIdToTimeWait(
       connection_id, framer_.version(), false, nullptr);
 }
@@ skipping 341 matching lines @@
 void QuicDispatcher::DeliverPacketsToSession(
     const std::list<BufferedPacket>& packets,
     QuicSession* session) {
   for (const BufferedPacket& packet : packets) {
     session->ProcessUdpPacket(packet.server_address, packet.client_address,
                               *(packet.packet));
   }
 }
 
 }  // namespace net