face: replace EventEmitter usage with Signal

refs #2300

Change-Id: I17d0d65d2c474b17dd9f23f271a6144b0b4fbc07
diff --git a/daemon/face/stream-face.hpp b/daemon/face/stream-face.hpp
index e719da3..e7cf894 100644
--- a/daemon/face/stream-face.hpp
+++ b/daemon/face/stream-face.hpp
@@ -178,7 +178,7 @@
 inline void
 StreamFace<T, U>::sendInterest(const Interest& interest)
 {
-  this->onSendInterest(interest);
+  this->emitSignal(onSendInterest, interest);
   StreamFaceSenderImpl<T, U, Interest>::send(*this, interest);
 }
 
@@ -186,7 +186,7 @@
 inline void
 StreamFace<T, U>::sendData(const Data& data)
 {
-  this->onSendData(data);
+  this->emitSignal(onSendData, data);
   StreamFaceSenderImpl<T, U, Data>::send(*this, data);
 }