model: Change NetDeviceFace into NetDeviceLinkService to match NFD 0.4+ Face model

ndnSIM (for now) intentionally uses LinkService instead of Transport for
optimization purposes and in order to preserve ns3::Packet Tags.  This
may be fixed in the future when there is a different mechanism to
propagate ns3 Tags or Tags are no longer necessary.

Change-Id: I2aeef8f37d587374a1c9fe04386e33b6fde83fe0
Refs: #3560
diff --git a/tests/unit-tests/model/ndn-net-device-face.t.cpp b/tests/unit-tests/model/ndn-net-device-face.t.cpp
index 0fad181..aad8c01 100644
--- a/tests/unit-tests/model/ndn-net-device-face.t.cpp
+++ b/tests/unit-tests/model/ndn-net-device-face.t.cpp
@@ -18,7 +18,7 @@
  **/
 
 
-#include "model/ndn-net-device-face.hpp"
+#include "model/ndn-net-device-link-service.hpp"
 
 #include "../tests-common.hpp"
 
@@ -53,11 +53,11 @@
   Simulator::Stop(Seconds(20.001));
   Simulator::Run();
 
-  BOOST_CHECK_EQUAL(getFace("1", "2")->getFaceStatus().getNOutInterests(), 100);
-  BOOST_CHECK_EQUAL(getFace("1", "2")->getFaceStatus().getNInDatas(), 100);
+  BOOST_CHECK_EQUAL(getFace("1", "2")->getCounters().nOutInterests, 100);
+  BOOST_CHECK_EQUAL(getFace("1", "2")->getCounters().nInData, 100);
 
-  BOOST_CHECK_EQUAL(getFace("2", "1")->getFaceStatus().getNInInterests(), 100);
-  BOOST_CHECK_EQUAL(getFace("2", "1")->getFaceStatus().getNOutDatas(), 100);
+  BOOST_CHECK_EQUAL(getFace("2", "1")->getCounters().nInInterests, 100);
+  BOOST_CHECK_EQUAL(getFace("2", "1")->getCounters().nOutData, 100);
 }
 
 BOOST_AUTO_TEST_SUITE_END()