Incorporating logging into Cast

media/cast/rtcp/rtcp_sender.h

Index: media/cast/rtcp/rtcp_sender.h
diff --git a/media/cast/rtcp/rtcp_sender.h b/media/cast/rtcp/rtcp_sender.h
index de97d38b4c7ab2255597c1e30b5c1959e24bc552..24915ddc83422b96929fb4580dfa0ba3b19c3f30 100644
--- a/media/cast/rtcp/rtcp_sender.h
+++ b/media/cast/rtcp/rtcp_sender.h
@@ -18,7 +18,8 @@ namespace cast {
 
 class RtcpSender {
  public:
-  RtcpSender(PacedPacketSender* const paced_packet_sender,
+  RtcpSender(scoped_refptr<CastEnvironment> cast_environment,
+             PacedPacketSender* const paced_packet_sender,
              uint32 sending_ssrc,
              const std::string& c_name);
 
@@ -113,6 +114,7 @@ class RtcpSender {
 
   // Not owned by this class.
   PacedPacketSender* transport_;
+  scoped_refptr<CastEnvironment> cast_environment_;
 
   DISALLOW_COPY_AND_ASSIGN(RtcpSender);
 };