Remove GetReceiveBandwidthEstimatorStats.

Removes unnecessary non-standard stats that we don't really make use of.

BUG=
R=pthatcher@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/47379004

Cr-Commit-Position: refs/heads/master@{#8588}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8588 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/session/media/channel.h b/talk/session/media/channel.h
index 29980bb..05818a0 100644
--- a/talk/session/media/channel.h
+++ b/talk/session/media/channel.h
@@ -529,7 +529,7 @@
   int GetScreencastFps(uint32 ssrc);
   int GetScreencastMaxPixels(uint32 ssrc);
   // Get statistics about the current media session.
-  bool GetStats(const StatsOptions& options, VideoMediaInfo* stats);
+  bool GetStats(VideoMediaInfo* stats);
 
   sigslot::signal2<VideoChannel*, const std::vector<ConnectionInfo>&>
       SignalConnectionMonitor;