Change to calculate the real NTP in TimeTicks.

media/cast/rtp_sender/rtp_sender.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 "media/cast/rtp_sender/rtp_sender.h"
 
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/pacing/paced_sender.h"
@@ skipping 103 matching lines @@
 }
 
 void RtpSender::RtpStatistics(const base::TimeTicks& now,
                               RtcpSenderInfo* sender_info) {
   // The timestamp of this Rtcp packet should be estimated as the timestamp of
   // the frame being captured at this moment. We are calculating that
   // timestamp as the last frame's timestamp + the time since the last frame
   // was captured.
   uint32 ntp_seconds = 0;
   uint32 ntp_fraction = 0;
-  ConvertTimeToNtp(now, &ntp_seconds, &ntp_fraction);
+  ConvertTimeToFractions((now - base::TimeTicks()).InMicroseconds(),

[miu, 2013/10/30 19:33:35]

I'm confused: Did you mean to change this, or was this left over from a previous
patch?

[pwestin, 2013/10/30 23:14:30]

Yes you are correct, good catch 

+      &ntp_seconds, &ntp_fraction);
   sender_info->ntp_seconds = ntp_seconds;
   sender_info->ntp_fraction = ntp_fraction;
 
   base::TimeTicks time_sent;
   uint32 rtp_timestamp;
   if (packetizer_->LastSentTimestamp(&time_sent, &rtp_timestamp)) {
     base::TimeDelta time_since_last_send = now - time_sent;
     sender_info->rtp_timestamp = rtp_timestamp +
         time_since_last_send.InMilliseconds() * (config_.frequency / 1000);
   } else {
     sender_info->rtp_timestamp = 0;
   }
   sender_info->send_packet_count = packetizer_->send_packets_count();
   sender_info->send_octet_count = packetizer_->send_octet_count();
 }
 
 }  //  namespace cast
 }  // namespace media