IVGCVSW-4400 Backend Counter Registry Functionality

 * Adding BackendProfilingContext to the MockBackend
 * Made IBackendProfilingContext pure Virtual
 * Added UnitTest using MockBackend for testing Backend Counter Registration
 * Moved Registry of backend counters from Initialize() to AddBackendProfilingContext()
 * Added m_MaxGlobalCounterId to ProfilingService
 * Removed automatic registration of MockBack in BackendRegistry()

Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: Ie1c6c31e56d1ac7079d6116ecad041961014aedc
diff --git a/src/backends/backendsCommon/test/OptimizationViewsTests.cpp b/src/backends/backendsCommon/test/OptimizationViewsTests.cpp
index 1efc697..3aebe3e 100644
--- a/src/backends/backendsCommon/test/OptimizationViewsTests.cpp
+++ b/src/backends/backendsCommon/test/OptimizationViewsTests.cpp
@@ -199,6 +199,7 @@
     input1->GetOutputSlot(0).SetTensorInfo(armnn::TensorInfo({ 1, 1, 4, 4 }, armnn::DataType::Float32));
     addition->GetOutputSlot(0).SetTensorInfo(armnn::TensorInfo({ 1, 1, 4, 4 }, armnn::DataType::Float32));
 
+    armnn::MockBackendInitialiser initialiser;
     armnn::IRuntime::CreationOptions options;
     armnn::IRuntimePtr runtime(armnn::IRuntime::Create(options));