Delete unused code from QuicSentPacketManager. No behavior change.

net/quic/test_tools/quic_sent_packet_manager_peer.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/test_tools/quic_sent_packet_manager_peer.h"
 
 #include "base/stl_util.h"
 #include "net/quic/core/congestion_control/loss_detection_interface.h"
 #include "net/quic/core/congestion_control/send_algorithm_interface.h"
 #include "net/quic/core/quic_flags.h"
@@ skipping 28 matching lines @@
   return sent_packet_manager->use_new_rto_;
 }
 
 // static
 bool QuicSentPacketManagerPeer::GetUndoRetransmits(
     QuicSentPacketManager* sent_packet_manager) {
   return sent_packet_manager->undo_pending_retransmits_;
 }
 
 // static
-QuicByteCount QuicSentPacketManagerPeer::GetReceiveWindow(
-    QuicSentPacketManager* sent_packet_manager) {
-  return sent_packet_manager->receive_buffer_bytes_;
-}
-
-// static
 void QuicSentPacketManagerPeer::SetPerspective(
     QuicSentPacketManager* sent_packet_manager,
     Perspective perspective) {
   sent_packet_manager->perspective_ = perspective;
 }
 
 // static
 SendAlgorithmInterface* QuicSentPacketManagerPeer::GetSendAlgorithm(
     const QuicSentPacketManager& sent_packet_manager) {
   return sent_packet_manager.send_algorithm_.get();
@@ skipping 143 matching lines @@
 }
 
 // static
 QuicUnackedPacketMap* QuicSentPacketManagerPeer::GetUnackedPacketMap(
     QuicSentPacketManager* sent_packet_manager) {
   return &sent_packet_manager->unacked_packets_;
 }
 
 }  // namespace test
 }  // namespace net