IVGCVSW-2067 : dynamically create workload factories based on the backends in the network

Change-Id: Ide594db8c79ff67642721d8bad47624b88621fbd
diff --git a/src/backends/test/BackendRegistryTests.cpp b/src/backends/test/BackendRegistryTests.cpp
index f6f7499..34a2706 100644
--- a/src/backends/test/BackendRegistryTests.cpp
+++ b/src/backends/test/BackendRegistryTests.cpp
@@ -55,7 +55,7 @@
         [&called]()
         {
             called = true;
-            return armnn::IBackendUniquePtr(nullptr, nullptr);
+            return armnn::IBackendInternalUniquePtr(nullptr);
         }
     );
 
@@ -82,7 +82,7 @@
         [&called]()
         {
             called = true;
-            return armnn::IBackendUniquePtr(nullptr, nullptr);
+            return armnn::IBackendInternalUniquePtr(nullptr);
         }
     );