API changes to Write path Session on down for FEC protection.

net/quic/test_tools/quic_packet_generator_peer.cc

-// Copyright (c) 2014 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_packet_generator_peer.h"
-
-#include "net/quic/quic_packet_creator.h"
-#include "net/quic/quic_packet_generator.h"
-
-namespace net {
-namespace test {
-
-// static
-void QuicPacketGeneratorPeer::MaybeStartFecProtection(
-    QuicPacketGenerator* generator) {
-  generator->MaybeStartFecProtection();
-}
-
-// static
-void QuicPacketGeneratorPeer::MaybeStopFecProtection(
-    QuicPacketGenerator* generator, bool force) {
-  generator->MaybeStopFecProtection(force);
-}
-
-// static
-void QuicPacketGeneratorPeer::SwitchFecProtectionOn(
-  QuicPacketGenerator* generator, size_t max_packets_per_fec_group) {
-  generator->packet_creator_->set_max_packets_per_fec_group(
-      max_packets_per_fec_group);
-  generator->MaybeStartFecProtection();
-}
-
-}  // namespace test
-}  // namespace net