Cast:Adding cast_transport_config and cleaning up

media/cast/transport/rtcp/rtcp_builder.cc

Index: media/cast/transport/rtcp/rtcp_builder.cc
diff --git a/media/cast/transport/rtcp/rtcp_builder.cc b/media/cast/transport/rtcp/rtcp_builder.cc
index 705582e7affaf12c43038500e5f2b577b265de78..b9cd8d2a0c5e1b832aa2699759b54efcaf9358cb 100644
--- a/media/cast/transport/rtcp/rtcp_builder.cc
+++ b/media/cast/transport/rtcp/rtcp_builder.cc
@@ -9,7 +9,6 @@
 #include <vector>
 
 #include "base/logging.h"
-#include "media/cast/rtcp/rtcp_utility.h"
 #include "media/cast/transport/cast_transport_defines.h"
 #include "media/cast/transport/pacing/paced_sender.h"
 #include "net/base/big_endian.h"
@@ -21,6 +20,13 @@ namespace media {
 namespace cast {
 namespace transport {
 
+namespace {
+// RFC 3550 page 44, including end null.
+static const size_t kRtcpCnameSize = 256;
+static const uint32 kCast = ('C' << 24) + ('A' << 16) + ('S' << 8) + 'T';
+static const uint8 kSenderLogSubtype = 1;
+};
+
 RtcpBuilder::RtcpBuilder(PacedPacketSender* outgoing_transport,
                              uint32 sending_ssrc,
                              const std::string& c_name)