IVGCVSW-4022 Create a DeclareLabel utility function

 * Created new TimelineUtilityMethods class
 * Created the DeclareLabel utility methods inside the new class
 * Added unit tests

Change-Id: Ife0f7853a556d48206b76baeb3934344a990bee9
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
diff --git a/src/profiling/TimelineUtilityMethods.hpp b/src/profiling/TimelineUtilityMethods.hpp
new file mode 100644
index 0000000..22727c8
--- /dev/null
+++ b/src/profiling/TimelineUtilityMethods.hpp
@@ -0,0 +1,33 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "ISendTimelinePacket.hpp"
+#include "ProfilingGuid.hpp"
+
+namespace armnn
+{
+
+namespace profiling
+{
+
+class TimelineUtilityMethods
+{
+public:
+    TimelineUtilityMethods(ISendTimelinePacket& sendTimelinePacket)
+        : m_SendTimelinePacket(sendTimelinePacket)
+    {}
+    ~TimelineUtilityMethods() = default;
+
+    ProfilingStaticGuid DeclareLabel(const std::string& labelName);
+
+private:
+    ISendTimelinePacket& m_SendTimelinePacket;
+};
+
+} // namespace profiling
+
+} // namespace armnn