APPBROWSER-304,342: Add exclude padding support for OpenGL ES implementation and implement MaxPool operators

Change-Id: Ie6ba36ff114feec2a21739dba11bbb60b76af443
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/113697
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Stephen Li <stephen.li@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/core/GLES_COMPUTE/kernels/GCPoolingLayerKernel.h b/arm_compute/core/GLES_COMPUTE/kernels/GCPoolingLayerKernel.h
index d4921c2..a0610d0 100644
--- a/arm_compute/core/GLES_COMPUTE/kernels/GCPoolingLayerKernel.h
+++ b/arm_compute/core/GLES_COMPUTE/kernels/GCPoolingLayerKernel.h
@@ -26,6 +26,8 @@
 
 #include "arm_compute/core/GLES_COMPUTE/IGCKernel.h"
 
+#include "arm_compute/core/Error.h"
+
 namespace arm_compute
 {
 class IGCTensor;
@@ -55,6 +57,16 @@
      */
     void configure(const IGCTensor *input, IGCTensor *output, const PoolingLayerInfo &pool_info);
 
+    /** Static function to check if given info will lead to a valid configuration of @ref GCPoolingLayerKernel
+     *
+     * @param[in] input     Source tensor info. Data types supported: F16/F32.
+     * @param[in] output    Destination tensor info. Data types supported: Same as @p input.
+     * @param[in] pool_info Contains pooling operation information described in @ref PoolingLayerInfo.
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, const PoolingLayerInfo &pool_info);
+
     // Inherited methods overridden:
     void run(const Window &window) override;
     BorderSize border_size() const override;