COMPMID-2549: Add GLES Runtime Context interfaces.

* Creates interfaces and concrete classes
* Ports GCActivationalLayer
* Adapts test framework and relevant tests

Change-Id: Ide36cd65ebf185958db3c4a5bebd630fcb2f39b3
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2199
Reviewed-by: Pablo Marquez <pablo.tello@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/GLES_COMPUTE/GCCoreRuntimeContext.h b/arm_compute/core/GLES_COMPUTE/GCCoreRuntimeContext.h
new file mode 100644
index 0000000..be47bfd
--- /dev/null
+++ b/arm_compute/core/GLES_COMPUTE/GCCoreRuntimeContext.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2019 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_GCCORERUNTIME_CONTEXT_H__
+#define __ARM_COMPUTE_GCCORERUNTIME_CONTEXT_H__
+
+#include "arm_compute/core/GLES_COMPUTE/OpenGLES.h"
+
+namespace arm_compute
+{
+// Forward declarations
+class GCKernelLibrary;
+
+/** Core runtime context for OpenGL ES */
+class GCCoreRuntimeContext final
+{
+public:
+    /** Legacy constructor */
+    GCCoreRuntimeContext();
+
+    /** Constructor */
+    GCCoreRuntimeContext(GCKernelLibrary *kernel_lib);
+    /** Destructor */
+    ~GCCoreRuntimeContext() = default;
+    /** Default copy constructor */
+    GCCoreRuntimeContext(const GCCoreRuntimeContext &) = default;
+    /** Default move constructor */
+    GCCoreRuntimeContext(GCCoreRuntimeContext &&) = default;
+    /** Default copy assignment */
+    GCCoreRuntimeContext &operator=(const GCCoreRuntimeContext &) = default;
+    /** Default move assignment operator */
+    GCCoreRuntimeContext &operator=(GCCoreRuntimeContext &&) = default;
+    /** Kernel Library accessor
+     *
+     * @return The kernel library instance used by the core context
+     */
+    GCKernelLibrary *kernel_library() const;
+
+private:
+    GCKernelLibrary *_kernel_lib{ nullptr };
+};
+} // namespace arm_compute
+#endif /*__ARM_COMPUTE_GCCORERUNTIME_CONTEXT_H__ */