platform: rename create_egl_window to create_egl_surface

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/tests/buffer-count-test.c b/tests/buffer-count-test.c
index 23cbc6e..31d78c2 100644
--- a/tests/buffer-count-test.c
+++ b/tests/buffer-count-test.c
@@ -95,9 +95,9 @@
 				     surface->width,
 				     surface->height);
 	test_data->egl_surface =
-		weston_platform_create_egl_window(test_data->egl_dpy,
-						  test_data->egl_conf,
-						  native_window, NULL);
+		weston_platform_create_egl_surface(test_data->egl_dpy,
+						   test_data->egl_conf,
+						   native_window, NULL);
 
 	ret = eglMakeCurrent(test_data->egl_dpy, test_data->egl_surface,
 			     test_data->egl_surface, test_data->egl_ctx);