The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1a96dfbda016edeb50e631e20fb3cd28bda49908

commit 1a96dfbda016edeb50e631e20fb3cd28bda49908
Author: xjz <xjz@chromium.org>
Date: Fri Jul 01 18:41:11 2016

Use enum for RtpPayloadType.
Change |rtp_payload_type| to enum to specify both the type
(video/audio) and encoding codec of the RTP streaming.

BUG= 620445 

Review-Url: https://codereview.chromium.org/2068133005
Cr-Commit-Position: refs/heads/master@{#403490}

[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/chrome/browser/media/cast_transport_host_filter_unittest.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/chrome/common/cast_messages.h
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/chrome/renderer/extensions/cast_streaming_native_handler.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/chrome/renderer/media/cast_rtp_stream.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/chrome/renderer/media/cast_rtp_stream.h
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/cast_config.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/cast_config.h
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/net/cast_transport_config.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/net/cast_transport_config.h
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/net/cast_transport_impl_unittest.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/net/rtp/rtp_sender.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/receiver/frame_receiver.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/sender/audio_sender_unittest.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/test/end2end_unittest.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/test/receiver.cc
[modify] https://crrev.com/1a96dfbda016edeb50e631e20fb3cd28bda49908/media/cast/test/utility/default_config.cc