Cast: cancel re-sending if a later nack packet says the receiver doesn't want it anymore

media/cast/rtcp/rtcp_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 <stdint.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/mock_rtcp_receiver_feedback.h"
@@ skipping 90 matching lines @@
   virtual bool SendPackets(
       const transport::SendPacketVector& packets) OVERRIDE {
     return false;
   }
 
   virtual bool ResendPackets(
       const transport::SendPacketVector& packets) OVERRIDE {
     return false;
   }
 
+  virtual void CancelSendingPacket(
+      const transport::PacketKey& packet_key) OVERRIDE {
+  }
+
  private:
   bool drop_packets_;
   bool short_delay_;
   Rtcp* rtcp_;
   base::SimpleTestTickClock* testing_clock_;
   scoped_refptr<CastEnvironment> cast_environment_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalRtcpTransport);
 };
 
@@ skipping 413 matching lines @@
   base::TimeTicks out_3 = ConvertNtpToTimeTicks(ntp_seconds_3, ntp_fraction_3);
   EXPECT_EQ(input_time, out_3);  // Verify inverse.
 
   // Verify delta.
   EXPECT_EQ((out_3 - out_2), time_delta);
   EXPECT_NEAR((ntp_fraction_3 - ntp_fraction_2), 0xffffffff / 2, 1);
 }
 
 }  // namespace cast
 }  // namespace media