[Cast] RTT clean-up to the max!

chrome/renderer/media/cast_ipc_dispatcher.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 "chrome/renderer/media/cast_ipc_dispatcher.h"
 
 #include "chrome/common/cast_messages.h"
 #include "chrome/renderer/media/cast_transport_sender_ipc.h"
 #include "ipc/ipc_message_macros.h"
 
@@ skipping 84 matching lines @@
   CastTransportSenderIPC* sender = id_map_.Lookup(channel_id);
   if (sender) {
     sender->OnRawEvents(packet_events, frame_events);
   } else {
     DVLOG(1) << "CastIPCDispatcher::OnRawEvents on non-existing channel.";
   }
 }
 
 void CastIPCDispatcher::OnRtt(int32 channel_id,
                               uint32 ssrc,
-                              const media::cast::RtcpRttReport& rtt_report) {
+                              base::TimeDelta rtt) {
   CastTransportSenderIPC* sender = id_map_.Lookup(channel_id);
   if (sender) {
-    sender->OnRtt(ssrc, rtt_report);
+    sender->OnRtt(ssrc, rtt);
   } else {
     DVLOG(1) << "CastIPCDispatcher::OnRtt on non-existing channel.";
   }
 }
 
 void CastIPCDispatcher::OnRtcpCastMessage(
     int32 channel_id,
     uint32 ssrc,
     const media::cast::RtcpCastMessage& cast_message) {
   CastTransportSenderIPC* sender = id_map_.Lookup(channel_id);
   if (sender) {
     sender->OnRtcpCastMessage(ssrc, cast_message);
   } else {
     DVLOG(1) << "CastIPCDispatcher::OnRtt on non-existing channel.";
   }
 }