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

media/cast/rtcp/rtcp_sender_unittest.cc

Index: media/cast/rtcp/rtcp_sender_unittest.cc
diff --git a/media/cast/rtcp/rtcp_sender_unittest.cc b/media/cast/rtcp/rtcp_sender_unittest.cc
index 2bd807f3808500810e972a25a37b09cb5e45e018..0b0c7d3ab8917b283260e5fb96526f8f5aa67b81 100644
--- a/media/cast/rtcp/rtcp_sender_unittest.cc
+++ b/media/cast/rtcp/rtcp_sender_unittest.cc
@@ -59,7 +59,8 @@ class TestRtcpTransport : public transport::PacedPacketSender {
     return false;
   }
   virtual bool ResendPackets(
-      const transport::SendPacketVector& packets) OVERRIDE {
+      const transport::SendPacketVector& packets,
+      base::TimeDelta dedupe_window) OVERRIDE {
     return false;
   }