[Cast] RTT clean-up to the max!

chrome/renderer/media/cast_transport_sender_ipc.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_transport_sender_ipc.h"
 
 #include "base/callback.h"
 #include "base/id_map.h"
 #include "chrome/common/cast_messages.h"
 #include "chrome/renderer/media/cast_ipc_dispatcher.h"
@@ skipping 72 matching lines @@
     media::cast::CastTransportStatus status) {
   status_callback_.Run(status);
 }
 
 void CastTransportSenderIPC::OnRawEvents(
     const std::vector<media::cast::PacketEvent>& packet_events,
     const std::vector<media::cast::FrameEvent>& frame_events) {
   raw_events_callback_.Run(packet_events, frame_events);
 }
 
-void CastTransportSenderIPC::OnRtt(
-    uint32 ssrc,
-    const media::cast::RtcpRttReport& rtt_report) {
+void CastTransportSenderIPC::OnRtt(uint32 ssrc, base::TimeDelta rtt) {
   ClientMap::iterator it = clients_.find(ssrc);
   if (it == clients_.end()) {
     LOG(ERROR) << "Received RTT report from for unknown SSRC: " << ssrc;
     return;
   }
-  if (it->second.rtt_cb.is_null())
-    return;
-  it->second.rtt_cb.Run(
-      rtt_report.rtt,
-      rtt_report.avg_rtt,
-      rtt_report.min_rtt,
-      rtt_report.max_rtt);
+  if (!it->second.rtt_cb.is_null())
+    it->second.rtt_cb.Run(rtt);
 }
 
 void CastTransportSenderIPC::OnRtcpCastMessage(
     uint32 ssrc,
     const media::cast::RtcpCastMessage& cast_message) {
   ClientMap::iterator it = clients_.find(ssrc);
   if (it == clients_.end()) {
     LOG(ERROR) << "Received cast message from for unknown SSRC: " << ssrc;
     return;
   }
   if (it->second.cast_message_cb.is_null())
     return;
   it->second.cast_message_cb.Run(cast_message);
 }
 
 void CastTransportSenderIPC::Send(IPC::Message* message) {
   if (CastIPCDispatcher::Get()) {
     CastIPCDispatcher::Get()->Send(message);
   } else {
     delete message;
   }
 }