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

chrome/renderer/media/cast_transport_sender_ipc.h

Index: chrome/renderer/media/cast_transport_sender_ipc.h
diff --git a/chrome/renderer/media/cast_transport_sender_ipc.h b/chrome/renderer/media/cast_transport_sender_ipc.h
index ce18964c04de0876e64e5fb2727944eaaaf85d1e..721f4367982fbdef6dcf838bb2547e2680a001ef 100644
--- a/chrome/renderer/media/cast_transport_sender_ipc.h
+++ b/chrome/renderer/media/cast_transport_sender_ipc.h
@@ -41,9 +41,10 @@ class CastTransportSenderIPC
       const media::cast::RtcpRttCallback& rtt_cb) override;
   void InsertFrame(uint32 ssrc,
                    const media::cast::EncodedFrame& frame) override;
-  void SendSenderReport(uint32 ssrc,
-                        base::TimeTicks current_time,
-                        uint32 current_time_as_rtp_timestamp) override;
+  void SendSenderReport(
+      uint32 ssrc,
+      base::TimeTicks current_time,
+      media::cast::RtpTimeTicks current_time_as_rtp_timestamp) override;
   void CancelSendingFrames(uint32 ssrc,
                            const std::vector<uint32>& frame_ids) override;
   void ResendFrameForKickstart(uint32 ssrc, uint32 frame_id) override;