core: rename nfd::EventId to nfd::scheduler::EventId

refs #2298

Change-Id: I5d4f4c5234fd370666e81a8a8e7d312694a6ad5d
diff --git a/daemon/face/udp-face.hpp b/daemon/face/udp-face.hpp
index 49c374b..b56b81d 100644
--- a/daemon/face/udp-face.hpp
+++ b/daemon/face/udp-face.hpp
@@ -1,11 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014  Regents of the University of California,
- *                     Arizona Board of Regents,
- *                     Colorado State University,
- *                     University Pierre & Marie Curie, Sorbonne University,
- *                     Washington University in St. Louis,
- *                     Beijing Institute of Technology
+ * Copyright (c) 2014-2015,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
  *
  * This file is part of NFD (Named Data Networking Forwarding Daemon).
  * See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #ifndef NFD_DAEMON_FACE_UDP_FACE_HPP
 #define NFD_DAEMON_FACE_UDP_FACE_HPP
@@ -52,7 +53,7 @@
   closeIfIdle();
 
 private:
-  EventId m_closeIfIdleEvent;
+  scheduler::EventId m_closeIfIdleEvent;
   time::seconds m_idleTimeout;
   time::steady_clock::TimePoint m_lastIdleCheck;
 };