Replace uses of raw uint32's with a type-checked RtpTimeTicks data type.

media/cast/net/rtp/rtp_packetizer.h

 // 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.
 
 #ifndef MEDIA_CAST_NET_RTP_RTP_PACKETIZER_H_
 #define MEDIA_CAST_NET_RTP_RTP_PACKETIZER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <cmath>
 #include <list>
 #include <map>
 
 #include "base/time/time.h"
+#include "media/cast/common/rtp_time.h"
 #include "media/cast/net/rtp/packet_storage.h"
 
 namespace base {
 class TickClock;
 }
 
 namespace media {
 namespace cast {
 
 class PacedSender;
@@ skipping 26 matching lines @@
   // Return the next sequence number, and increment by one. Enables unique
   // incremental sequence numbers for every packet (including retransmissions).
   uint16_t NextSequenceNumber();
 
   size_t send_packet_count() const { return send_packet_count_; }
   size_t send_octet_count() const { return send_octet_count_; }
 
  private:
   void BuildCommonRTPheader(Packet* packet,
                             bool marker_bit,
-                            uint32_t time_stamp);
+                            RtpTimeTicks rtp_timestamp);
 
   RtpPacketizerConfig config_;
   PacedSender* const transport_;  // Not owned by this class.
   PacketStorage* packet_storage_;
 
   uint16_t sequence_number_;
-  uint32_t rtp_timestamp_;
-  uint16_t packet_id_;
 
   size_t send_packet_count_;
   size_t send_octet_count_;
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_RTP_RTP_PACKETIZER_H_