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

media/cast/rtcp/rtcp_sender_unittest.cc

 // Copyright 2013 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/memory/scoped_ptr.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/cast_environment.h"
 #include "media/cast/rtcp/receiver_rtcp_event_subscriber.h"
 #include "media/cast/rtcp/rtcp_sender.h"
@@ skipping 41 matching lines @@
                         packet->data.size()));
     packet_count_++;
     return true;
   }
 
   virtual bool SendPackets(
       const transport::SendPacketVector& packets) OVERRIDE {
     return false;
   }
   virtual bool ResendPackets(
-      const transport::SendPacketVector& packets) OVERRIDE {
+      const transport::SendPacketVector& packets,
+      base::TimeDelta dedupe_window) OVERRIDE {
     return false;
   }
 
   virtual void CancelSendingPacket(
       const transport::PacketKey& packet_key) OVERRIDE {
   }
 
   void SetExpectedRtcpPacket(scoped_ptr<Packet> packet) {
     expected_packet_.swap(*packet);
   }
@@ skipping 473 matching lines @@
     testing_clock.Advance(
         base::TimeDelta::FromMilliseconds(kTimeBetweenEventsMs));
     time_base_ms += kTimeBetweenEventsMs;
   }
 
   EXPECT_EQ(static_cast<int>(packet_count), test_transport_.packet_count());
 }
 
 }  // namespace cast
 }  // namespace media