COMPMID-2205: CL runtime context.

CL Interfaces implemented.
Concrete classes implemented.
One test (ActivationLayer) ported to the new interface.

Change-Id: I283808bec36ccfc2f13fe048c45cbbee698ce525
Signed-off-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1998
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/GLES_COMPUTE/GCTensor.h b/arm_compute/runtime/GLES_COMPUTE/GCTensor.h
index 344c788..a308ba0 100644
--- a/arm_compute/runtime/GLES_COMPUTE/GCTensor.h
+++ b/arm_compute/runtime/GLES_COMPUTE/GCTensor.h
@@ -32,13 +32,18 @@
 {
 class ITensorAllocator;
 class ITensorInfo;
+class IRuntimeContext;
 
 /** Interface for OpenGL ES tensor */
 class GCTensor : public IGCTensor, public IMemoryManageable
 {
 public:
-    /** Default constructor */
-    GCTensor();
+    /** Default constructor
+     *
+     * @param[in] ctx (Optional) Pointer to the runtime context.
+     *
+     */
+    GCTensor(IRuntimeContext *ctx = nullptr);
 
     /** Prevent instances of this class from being copied (As this class contains pointers) */
     GCTensor(const GCTensor &) = delete;