IVGCVSW-3381 Break up LayerTests.hpp into more manageable files

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Icf39434f09fd340ad664cb3b97b8bee6d9da4838
diff --git a/src/backends/backendsCommon/test/layerTests/ConvertFp32ToFp16TestImpl.hpp b/src/backends/backendsCommon/test/layerTests/ConvertFp32ToFp16TestImpl.hpp
new file mode 100644
index 0000000..bb0fce2
--- /dev/null
+++ b/src/backends/backendsCommon/test/layerTests/ConvertFp32ToFp16TestImpl.hpp
@@ -0,0 +1,17 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "LayerTestResult.hpp"
+
+#include <Half.hpp>
+
+#include <backendsCommon/IBackendInternal.hpp>
+#include <backendsCommon/WorkloadFactory.hpp>
+
+LayerTestResult<armnn::Half, 4> SimpleConvertFp32ToFp16Test(
+    armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);