cast: cleanup rtp header and parsing

media/cast/net/rtp/cast_message_builder_unittest.cc

Index: media/cast/net/rtp/cast_message_builder_unittest.cc
diff --git a/media/cast/net/rtp/cast_message_builder_unittest.cc b/media/cast/net/rtp/cast_message_builder_unittest.cc
index bae827a5a8ca419b771ce1e6802e6ea985560f72..166834ecb21d2717fe0168cf8ccc0de9fd1e31c6 100644
--- a/media/cast/net/rtp/cast_message_builder_unittest.cc
+++ b/media/cast/net/rtp/cast_message_builder_unittest.cc
@@ -9,7 +9,7 @@
 #include "media/cast/net/rtcp/rtcp.h"
 #include "media/cast/net/rtp/cast_message_builder.h"
 #include "media/cast/net/rtp/framer.h"
-#include "media/cast/net/rtp/rtp_receiver_defines.h"
+#include "media/cast/net/rtp/rtp_defines.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
@@ -139,6 +139,7 @@ class CastMessageBuilderTest : public ::testing::Test {
   RtpCastHeader rtp_header_;
   base::SimpleTestTickClock testing_clock_;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(CastMessageBuilderTest);
 };