harfbuzz: check in harfbuzz-ng, add gyp define to use it

third_party/harfbuzz-ng/src/hb-ft.h

+/*
+ * Copyright (C) 2009  Red Hat, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_FT_H
+#define HB_FT_H
+
+#include "hb.h"
+
+#include "hb-font.h"
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+HB_BEGIN_DECLS
+
+
+hb_font_funcs_t *
+hb_ft_get_font_funcs (void);
+
+hb_face_t *
+hb_ft_face_create (FT_Face           ft_face,
+                   hb_destroy_func_t destroy);
+
+/* Note: This function is not thread-safe */
+hb_face_t *
+hb_ft_face_create_cached (FT_Face ft_face);
+
+hb_font_t *
+hb_ft_font_create (FT_Face           ft_face,
+                   hb_destroy_func_t destroy);
+
+
+HB_END_DECLS
+
+#endif /* HB_FT_H */