Incorporating logging into Cast

media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc

Index: media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc
diff --git a/media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc b/media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc
index 790c513a8d3bc00862d646b924c39692b507063c..f4ba5ba5c21fec93bde5a1b418372a2e8fa90a09 100644
--- a/media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc
+++ b/media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc
@@ -39,11 +39,8 @@ void RtpPacketizer::IncomingEncodedVideoFrame(
   DCHECK(!config_.audio) << "Invalid state";
   if (config_.audio) return;
 
-  base::TimeTicks zero_time;
-  base::TimeDelta capture_delta = capture_time - zero_time;
-
   // Timestamp is in 90 KHz for video.
-  rtp_timestamp_ = static_cast<uint32>(capture_delta.InMilliseconds() * 90);
+  rtp_timestamp_ = GetVideoRtpTimestamp(capture_time);
   time_last_sent_rtp_timestamp_ = capture_time;
 
   Cast(video_frame->key_frame,