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 b20c9df0488a06dc0ae5f4529abde83ae0431961..fa23e0e2c63fac31c49b0d20e3e29ef1d11e5f6b 100644
--- a/media/cast/net/cast_transport_sender.h
+++ b/media/cast/net/cast_transport_sender.h
@@ -88,10 +88,9 @@ class CastTransportSender : public base::NonThreadSafe {
   // |ssrc| is the SSRC for this report.
   // |current_time| is the current time reported by a tick clock.
   // |current_time_as_rtp_timestamp| is the corresponding RTP timestamp.
-  virtual void SendSenderReport(
-      uint32 ssrc,
-      base::TimeTicks current_time,
-      uint32 current_time_as_rtp_timestamp) = 0;
+  virtual void SendSenderReport(uint32 ssrc,
+                                base::TimeTicks current_time,
+                                RtpTimeTicks current_time_as_rtp_timestamp) = 0;
 
   // Cancels sending packets for the frames in the set.
   // |ssrc| is the SSRC for the stream.