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

media/cast/net/rtcp/receiver_rtcp_event_subscriber.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/rtcp/receiver_rtcp_event_subscriber.h"
 
 #include <algorithm>
 #include <utility>
 
 namespace media {
@@ skipping 52 matching lines @@
       rtcp_event.packet_id = packet_event.packet_id;
       rtcp_events_.push_back(
           std::make_pair(packet_event.rtp_timestamp, rtcp_event));
     }
   }
 
   TruncateMapIfNeeded();
 }
 
 struct CompareByFirst {
-  bool operator()(const std::pair<RtpTimestamp, RtcpEvent>& a,
-                  const std::pair<RtpTimestamp, RtcpEvent>& b) {
+  bool operator()(const std::pair<RtpTimeTicks, RtcpEvent>& a,
+                  const std::pair<RtpTimeTicks, RtcpEvent>& b) {
     return a.first < b.first;
   }
 };
 
 void ReceiverRtcpEventSubscriber::GetRtcpEventsWithRedundancy(
     RtcpEvents* rtcp_events) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(rtcp_events);
 
   uint64 event_level = rtcp_events_.size() + popped_events_;
@@ skipping 46 matching lines @@
 
 bool ReceiverRtcpEventSubscriber::ShouldProcessEvent(
     CastLoggingEvent event_type, EventMediaType event_media_type) {
   return type_ == event_media_type &&
       (event_type == FRAME_ACK_SENT || event_type == FRAME_DECODED ||
        event_type == FRAME_PLAYOUT || event_type == PACKET_RECEIVED);
 }
 
 }  // namespace cast
 }  // namespace media