Add send frame rate statistics callback

BUG=2235
R=mflodman@webrtc.org, pbos@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/4479005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5213 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc

@@ -1645,4 +1645,13 @@ uint32_t ModuleRtpRtcpImpl::rtt_ms() const {
   return rtt_ms_;
 }
 
+void ModuleRtpRtcpImpl::RegisterSendFrameCountObserver(
+    FrameCountObserver* observer) {
+  rtp_sender_.RegisterFrameCountObserver(observer);
+}
+
+FrameCountObserver* ModuleRtpRtcpImpl::GetSendFrameCountObserver() const {
+  return rtp_sender_.GetFrameCountObserver();
+}
+
 }  // Namespace webrtc