Remove channel ids from various interfaces.

webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h

Index: webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
index c904e1fcac9db53e5d5b4840739a55ba0c2df9b4..d6fbf2e468bf44f642e7263164487cb0a2baf85c 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.h
@@ -25,8 +25,7 @@ class RtpReceiverImpl : public RtpReceiver {
   // Callbacks passed in here may not be NULL (use Null Object callbacks if you
   // want callbacks to do nothing). This class takes ownership of the media
   // receiver but nothing else.
-  RtpReceiverImpl(int32_t id,
-                  Clock* clock,
+  RtpReceiverImpl(Clock* clock,
                   RtpAudioFeedback* incoming_audio_messages_callback,
                   RtpFeedback* incoming_messages_callback,
                   RTPPayloadRegistry* rtp_payload_registry,
@@ -79,8 +78,6 @@ class RtpReceiverImpl : public RtpReceiver {
   RTPPayloadRegistry* rtp_payload_registry_;
   rtc::scoped_ptr<RTPReceiverStrategy> rtp_media_receiver_;
 
-  int32_t id_;
-
   RtpFeedback* cb_rtp_feedback_;
 
   rtc::scoped_ptr<CriticalSectionWrapper> critical_section_rtp_receiver_;