fw: add override specifier to Strategy triggers

refs #2281

Change-Id: I5357ac6a93260492900d24c8955fdd7397ef2d27
diff --git a/tests/daemon/fw/dummy-strategy.hpp b/tests/daemon/fw/dummy-strategy.hpp
index 83af2fa..50de93e 100644
--- a/tests/daemon/fw/dummy-strategy.hpp
+++ b/tests/daemon/fw/dummy-strategy.hpp
@@ -47,7 +47,7 @@
   afterReceiveInterest(const Face& inFace,
                        const Interest& interest,
                        shared_ptr<fib::Entry> fibEntry,
-                       shared_ptr<pit::Entry> pitEntry)
+                       shared_ptr<pit::Entry> pitEntry) DECL_OVERRIDE
   {
     ++m_afterReceiveInterest_count;
 
@@ -61,13 +61,13 @@
 
   virtual void
   beforeSatisfyInterest(shared_ptr<pit::Entry> pitEntry,
-                        const Face& inFace, const Data& data)
+                        const Face& inFace, const Data& data) DECL_OVERRIDE
   {
     ++m_beforeSatisfyInterest_count;
   }
 
   virtual void
-  beforeExpirePendingInterest(shared_ptr<pit::Entry> pitEntry)
+  beforeExpirePendingInterest(shared_ptr<pit::Entry> pitEntry) DECL_OVERRIDE
   {
     ++m_beforeExpirePendingInterest_count;
   }