Port OpenCL Dequantization to new API

Partially resolves: COMPMID-4193

Change-Id: I4e14149d5b0a7f9c0dd3bfce800eaddca1e4d885
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5238
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/CL/functions/CLDequantizationLayer.h b/arm_compute/runtime/CL/functions/CLDequantizationLayer.h
index b2cf335..7ecf094 100644
--- a/arm_compute/runtime/CL/functions/CLDequantizationLayer.h
+++ b/arm_compute/runtime/CL/functions/CLDequantizationLayer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020 Arm Limited.
+ * Copyright (c) 2017-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -24,9 +24,10 @@
 #ifndef ARM_COMPUTE_CLDEQUANTIZATIONLAYER_H
 #define ARM_COMPUTE_CLDEQUANTIZATIONLAYER_H
 
-#include "arm_compute/runtime/CL/ICLSimpleFunction.h"
-
 #include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/IFunction.h"
+
+#include <memory>
 
 namespace arm_compute
 {
@@ -35,10 +36,22 @@
 class ICLTensor;
 class ITensorInfo;
 
-/** Basic function to run @ref CLDequantizationLayerKernel that dequantizes an input tensor */
-class CLDequantizationLayer : public ICLSimpleFunction
+/** Basic function to run @ref opencl::ClDequantization that dequantizes an input tensor */
+class CLDequantizationLayer : public IFunction
 {
 public:
+    /** Default Constructor */
+    CLDequantizationLayer();
+    /** Default Destructor */
+    ~CLDequantizationLayer();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLDequantizationLayer(const CLDequantizationLayer &) = delete;
+    /** Default move constructor */
+    CLDequantizationLayer(CLDequantizationLayer &&) = default;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLDequantizationLayer &operator=(const CLDequantizationLayer &) = delete;
+    /** Default move assignment operator */
+    CLDequantizationLayer &operator=(CLDequantizationLayer &&) = default;
     /** Set the input and output tensors.
      *
      * @param[in]  input  Source tensor with at least 3 dimensions. The dimensions over the third will be interpreted as batches.
@@ -62,6 +75,13 @@
      * @return a status
      */
     static Status validate(const ITensorInfo *input, const ITensorInfo *output);
+
+    // Inherited methods overridden:
+    void run() override;
+
+private:
+    struct Impl;
+    std::unique_ptr<Impl> _impl;
 };
 } // namespace arm_compute
 #endif /* ARM_COMPUTE_CLDEQUANTIZATIONLAYER_H */