added performance tests for gpu module

modules/gpu/perf/perf_precomp.hpp

@@ -0,0 +1,17 @@
+#ifndef __OPENCV_PERF_PRECOMP_HPP__
+#define __OPENCV_PERF_PRECOMP_HPP__
+
+#include <cstdio>
+#include <iostream>
+#include "cvconfig.h"
+#include "opencv2/ts/ts.hpp"
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/gpu/gpu.hpp"
+#include "perf_utility.hpp"
+
+#if GTEST_CREATE_SHARED_LIBRARY
+#error no modules except ts should have GTEST_CREATE_SHARED_LIBRARY defined
+#endif
+
+#endif