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

net/quic/quic_http_stream_test.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/quic_http_stream.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 72 matching lines @@
       : QuicConnection(connection_id,
                        address,
                        helper,
                        alarm_factory,
                        writer,
                        true /* owns_writer */,
                        Perspective::IS_CLIENT,
                        versions) {}
 
   void SetSendAlgorithm(SendAlgorithmInterface* send_algorithm) {
-    QuicConnectionPeer::SetSendAlgorithm(this, send_algorithm);
+    QuicConnectionPeer::SetSendAlgorithm(this, kDefaultPathId, send_algorithm);
   }
 };
 
 // Subclass of QuicHttpStream that closes itself when the first piece of data
 // is received.
 class AutoClosingStream : public QuicHttpStream {
  public:
   explicit AutoClosingStream(
       const base::WeakPtr<QuicChromiumClientSession>& session)
       : QuicHttpStream(session) {}
@@ skipping 1803 matching lines @@
   EXPECT_TRUE(AtEof());
 
   // QuicHttpStream::GetTotalSent/ReceivedBytes includes only headers.
   EXPECT_EQ(static_cast<int64_t>(spdy_request_headers_frame_length),
             stream_->GetTotalSentBytes());
   EXPECT_EQ(0, stream_->GetTotalReceivedBytes());
 }
 
 }  // namespace test
 }  // namespace net