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

media/cast/cast_defines.h

 // 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.
 
 #ifndef MEDIA_CAST_CAST_DEFINES_H_
 #define MEDIA_CAST_CAST_DEFINES_H_
 
 #include <stdint.h>
 
 #include "base/time/time.h"
 
 namespace media {
 namespace cast {
 
 // TODO(miu): All remaining functions in this file are to be replaced with
 // methods in well-defined data types.  http://crbug.com/530839
 
 inline bool IsNewerFrameId(uint32_t frame_id, uint32_t prev_frame_id) {
   return (frame_id != prev_frame_id) &&
          static_cast<uint32_t>(frame_id - prev_frame_id) < 0x80000000;
 }
 
-inline bool IsNewerRtpTimestamp(uint32_t timestamp, uint32_t prev_timestamp) {
-  return (timestamp != prev_timestamp) &&
-         static_cast<uint32_t>(timestamp - prev_timestamp) < 0x80000000;
-}
-
 inline bool IsOlderFrameId(uint32_t frame_id, uint32_t prev_frame_id) {
   return (frame_id == prev_frame_id) || IsNewerFrameId(prev_frame_id, frame_id);
 }
 
 inline bool IsNewerPacketId(uint16_t packet_id, uint16_t prev_packet_id) {
   return (packet_id != prev_packet_id) &&
          static_cast<uint16_t>(packet_id - prev_packet_id) < 0x8000;
 }
 
 inline bool IsNewerSequenceNumber(uint16_t sequence_number,
                                   uint16_t prev_sequence_number) {
   // Same function as IsNewerPacketId just different data and name.
   return IsNewerPacketId(sequence_number, prev_sequence_number);
 }
 
-inline base::TimeDelta RtpDeltaToTimeDelta(int64_t rtp_delta,
-                                           int rtp_timebase) {
-  DCHECK_GT(rtp_timebase, 0);
-  return rtp_delta * base::TimeDelta::FromSeconds(1) / rtp_timebase;
-}
-
-inline int64_t TimeDeltaToRtpDelta(base::TimeDelta delta, int rtp_timebase) {
-  DCHECK_GT(rtp_timebase, 0);
-  return delta * rtp_timebase / base::TimeDelta::FromSeconds(1);
-}
-
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_CAST_DEFINES_H_