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

media/cast/net/cast_transport_sender.h

Index: media/cast/net/cast_transport_sender.h
diff --git a/media/cast/net/cast_transport_sender.h b/media/cast/net/cast_transport_sender.h
index 0bc09dd3a5e02a33eb9283a680d884166d2a428c..0ff76e111e93b20d1ac41217f9d5373f4146499d 100644
--- a/media/cast/net/cast_transport_sender.h
+++ b/media/cast/net/cast_transport_sender.h
@@ -91,7 +91,7 @@ class CastTransportSender : public base::NonThreadSafe {
   // |current_time_as_rtp_timestamp| is the corresponding RTP timestamp.
   virtual void SendSenderReport(uint32_t ssrc,
                                 base::TimeTicks current_time,
-                                uint32_t current_time_as_rtp_timestamp) = 0;
+                                RtpTimeTicks current_time_as_rtp_timestamp) = 0;
 
   // Cancels sending packets for the frames in the set.
   // |ssrc| is the SSRC for the stream.