IVGCVSW-2125 : backends now can return optimizations

Change-Id: Ieec34224b433e1d2f3bbe66632cd6016cac5498c
diff --git a/src/backends/cl/ClBackend.hpp b/src/backends/cl/ClBackend.hpp
index f8a6253..ad84e8a 100644
--- a/src/backends/cl/ClBackend.hpp
+++ b/src/backends/cl/ClBackend.hpp
@@ -4,7 +4,6 @@
 //
 #pragma once
 
-#include <backendsCommon/IBackendContext.hpp>
 #include <backendsCommon/IBackendInternal.hpp>
 
 namespace armnn
@@ -21,6 +20,7 @@
 
     IBackendInternal::IWorkloadFactoryPtr CreateWorkloadFactory() const override;
     IBackendInternal::IBackendContextPtr CreateBackendContext(const IRuntime::CreationOptions&) const override;
+    IBackendInternal::Optimizations GetOptimizations() const override;
 };
 
 } // namespace armnn
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