Cast: Avoid retransmit if we sent the same packet recently (less than RTT)

chrome/browser/media/cast_transport_host_filter_unittest.cc

 // Copyright 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 "base/callback.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/default_tick_clock.h"
 #include "chrome/browser/media/cast_transport_host_filter.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "media/cast/logging/logging_defines.h"
@@ skipping 114 matching lines @@
   dlrr.last_rr = 7;
   dlrr.delay_since_last_rr = 8;
   CastHostMsg_SendRtcpFromRtpSender rtcp_msg(
       kChannelId, rtcp_data, dlrr);
   FakeSend(rtcp_msg);
 
   media::cast::MissingFramesAndPacketsMap missing_packets;
   missing_packets[1].insert(4);
   missing_packets[1].insert(7);
   CastHostMsg_ResendPackets resend_msg(
-      kChannelId, false, missing_packets, true);
+      kChannelId, false, missing_packets, true, base::TimeDelta());
   FakeSend(resend_msg);
 
   CastHostMsg_Delete delete_msg(kChannelId);
   FakeSend(delete_msg);
 }
 
 }  // namespace