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

media/cast/net/pacing/paced_sender.cc

 // 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.
 
 #include "media/cast/net/pacing/paced_sender.h"
 
 #include "base/big_endian.h"
 #include "base/bind.h"
 #include "base/debug/dump_without_crashing.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 317 matching lines @@
   PacketEvent& event = recent_packet_events_->back();
 
   // Populate the new PacketEvent by parsing the wire-format |packet|.
   //
   // TODO(miu): This parsing logic belongs in RtpParser.
   event.timestamp = clock_->NowTicks();
   event.type = type;
   base::BigEndianReader reader(reinterpret_cast<const char*>(&packet[0]),
                                packet.size());
   bool success = reader.Skip(4);
-  success &= reader.ReadU32(&event.rtp_timestamp);
+  uint32_t truncated_rtp_timestamp;
+  success &= reader.ReadU32(&truncated_rtp_timestamp);
   uint32 ssrc;
   success &= reader.ReadU32(&ssrc);
   if (ssrc == audio_ssrc_) {
+    event.rtp_timestamp = last_logged_audio_rtp_timestamp_ =
+        last_logged_audio_rtp_timestamp_.Expand(truncated_rtp_timestamp);
     event.media_type = AUDIO_EVENT;
   } else if (ssrc == video_ssrc_) {
+    event.rtp_timestamp = last_logged_video_rtp_timestamp_ =
+        last_logged_video_rtp_timestamp_.Expand(truncated_rtp_timestamp);
     event.media_type = VIDEO_EVENT;
   } else {
     DVLOG(3) << "Got unknown ssrc " << ssrc << " when logging packet event";
     return;
   }
   success &= reader.Skip(2);
   success &= reader.ReadU16(&event.packet_id);
   success &= reader.ReadU16(&event.max_packet_id);
   event.size = packet.size();
   DCHECK(success);
 }
 
 }  // namespace cast
 }  // namespace media