Add a merely pass-through QuicMultipathSentPacketManager. Protected behind blocked flag FLAGS_quic_…

net/quic/test_tools/quic_test_utils.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/test_tools/quic_test_utils.h"
 
 #include <memory>
 
 #include "base/sha1.h"
 #include "base/stl_util.h"
@@ skipping 814 matching lines @@
 
 MockQuicConnectionDebugVisitor::MockQuicConnectionDebugVisitor() {}
 
 MockQuicConnectionDebugVisitor::~MockQuicConnectionDebugVisitor() {}
 
 MockReceivedPacketManager::MockReceivedPacketManager(QuicConnectionStats* stats)
     : QuicReceivedPacketManager(stats) {}
 
 MockReceivedPacketManager::~MockReceivedPacketManager() {}
 
+MockSentPacketManager::MockSentPacketManager() {}
+
+MockSentPacketManager::~MockSentPacketManager() {}
+
+MockConnectionCloseDelegate::MockConnectionCloseDelegate() {}
+
+MockConnectionCloseDelegate::~MockConnectionCloseDelegate() {}
+
 void CreateClientSessionForTest(QuicServerId server_id,
                                 bool supports_stateless_rejects,
                                 QuicTime::Delta connection_start_time,
                                 QuicVersionVector supported_versions,
                                 MockQuicConnectionHelper* helper,
                                 MockAlarmFactory* alarm_factory,
                                 QuicCryptoClientConfig* crypto_client_config,
                                 PacketSavingConnection** client_connection,
                                 TestQuicSpdyClientSession** client_session) {
   CHECK(crypto_client_config);
@@ skipping 40 matching lines @@
   // strike register worries that we've just overflowed a uint32_t time.
   (*server_connection)->AdvanceTime(connection_start_time);
 }
 
 QuicStreamId QuicClientDataStreamId(int i) {
   return kClientDataStreamId1 + 2 * i;
 }
 
 }  // namespace test
 }  // namespace net