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

net/quic/test_tools/quic_connection_peer.h

 // 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.
 
 #ifndef NET_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_
 #define NET_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_
 
 #include "base/macros.h"
 #include "net/base/ip_endpoint.h"
 #include "net/quic/quic_connection.h"
@@ skipping 17 matching lines @@
 class QuicSentPacketManager;
 class SendAlgorithmInterface;
 
 namespace test {
 
 // Peer to make public a number of otherwise private QuicConnection methods.
 class QuicConnectionPeer {
  public:
   static void SendAck(QuicConnection* connection);
 
+  // Sets send algorithm of |path_id|.
   static void SetSendAlgorithm(QuicConnection* connection,
+                               QuicPathId path_id,
                                SendAlgorithmInterface* send_algorithm);
 
+  // Sets loss algorithm of |path_id|.
+  static void SetLossAlgorithm(QuicConnection* connection,
+                               QuicPathId path_id,
+                               LossDetectionInterface* loss_algorithm);
+
   static const QuicFrame GetUpdatedAckFrame(QuicConnection* connection);
 
   static void PopulateStopWaitingFrame(QuicConnection* connection,
                                        QuicStopWaitingFrame* stop_waiting);
 
   static QuicConnectionVisitorInterface* GetVisitor(QuicConnection* connection);
 
   static QuicPacketCreator* GetPacketCreator(QuicConnection* connection);
 
   static QuicPacketGenerator* GetPacketGenerator(QuicConnection* connection);
 
-  static QuicSentPacketManager* GetSentPacketManager(
-      QuicConnection* connection);
+  // Returns sent packet manager of |path_id|.
+  static QuicSentPacketManager* GetSentPacketManager(QuicConnection* connection,
+                                                     QuicPathId path_id);
 
   static QuicTime::Delta GetNetworkTimeout(QuicConnection* connection);
 
   static QuicSentEntropyManager* GetSentEntropyManager(
       QuicConnection* connection);
 
   static QuicPacketEntropyHash GetSentEntropyHash(
       QuicConnection* connection,
       QuicPacketNumber packet_number);
 
@@ skipping 62 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(QuicConnectionPeer);
 };
 
 }  // namespace test
 
 }  // namespace net
 
 #endif  // NET_QUIC_TEST_TOOLS_QUIC_CONNECTION_PEER_H_