Cast: IPC glue between cast library transport and encoders.

media/cast/audio_sender/audio_sender.cc

Index: media/cast/audio_sender/audio_sender.cc
diff --git a/media/cast/audio_sender/audio_sender.cc b/media/cast/audio_sender/audio_sender.cc
index 8bd0427d2cec184905138a0d5b2911136d565c24..7e92d92eec7293f2d494454f7ab3157c1e18d5c0 100644
--- a/media/cast/audio_sender/audio_sender.cc
+++ b/media/cast/audio_sender/audio_sender.cc
@@ -62,7 +62,7 @@ class LocalRtpSenderStatistics : public RtpSenderStatistics {
     memcpy(sender_info, &sender_info_, sizeof(transport::RtcpSenderInfo));
   }
 
-  void StoreStatistics(transport::RtcpSenderInfo& sender_info,
+  void StoreStatistics(const transport::RtcpSenderInfo& sender_info,
                        base::TimeTicks time_sent,
                        uint32 rtp_timestamp) {
     sender_info_ = sender_info;