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

media/cast/net/rtp/frame_buffer.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_FRAME_BUFFER_H_
 #define MEDIA_CAST_NET_RTP_FRAME_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <vector>
 
 #include "base/macros.h"
+#include "media/cast/common/rtp_time.h"
 #include "media/cast/net/cast_transport_config.h"
 #include "media/cast/net/rtp/rtp_defines.h"
 
 namespace media {
 namespace cast {
 
 typedef std::map<uint16_t, std::vector<uint8_t>> PacketMap;
 
 class FrameBuffer {
  public:
@@ skipping 20 matching lines @@
 
  private:
   uint32_t frame_id_;
   uint16_t max_packet_id_;
   uint16_t num_packets_received_;
   uint16_t max_seen_packet_id_;
   uint16_t new_playout_delay_ms_;
   bool is_key_frame_;
   size_t total_data_size_;
   uint32_t last_referenced_frame_id_;
-  uint32_t rtp_timestamp_;
+  RtpTimeTicks rtp_timestamp_;
   PacketMap packets_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameBuffer);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_RTP_FRAME_BUFFER_H_