Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-fallback-shape-private.hh

Index: third_party/harfbuzz-ng/src/hb-fallback-shape-private.hh
diff --git a/third_party/harfbuzz-ng/src/hb-language.h b/third_party/harfbuzz-ng/src/hb-fallback-shape-private.hh
similarity index 70%
copy from third_party/harfbuzz-ng/src/hb-language.h
copy to third_party/harfbuzz-ng/src/hb-fallback-shape-private.hh
index d3c91fb429a78c60657e265d782f31d102ea9e89..d0beb16dec680c23dcc51aef983bcff398555aa6 100644
--- a/third_party/harfbuzz-ng/src/hb-language.h
+++ b/third_party/harfbuzz-ng/src/hb-fallback-shape-private.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009  Red Hat, Inc.
+ * Copyright © 2011  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
@@ -21,26 +21,28 @@
  * 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
+ * Google Author(s): Behdad Esfahbod
  */
 
-#ifndef HB_LANGUAGE_H
-#define HB_LANGUAGE_H
+#ifndef HB_FALLBACK_SHAPE_PRIVATE_HH
+#define HB_FALLBACK_SHAPE_PRIVATE_HH
 
-#include "hb-common.h"
+#include "hb-private.hh"
 
-HB_BEGIN_DECLS
+#include "hb-shape.h"
 
 
-typedef const void *hb_language_t;
+HB_BEGIN_DECLS
 
-hb_language_t
-hb_language_from_string (const char *str);
 
-const char *
-hb_language_to_string (hb_language_t language);
+HB_INTERNAL hb_bool_t
+hb_fallback_shape (hb_font_t          *font,
+		   hb_buffer_t        *buffer,
+		   const hb_feature_t *features,
+		   unsigned int        num_features,
+		   const char * const *shaper_options);
 
 
 HB_END_DECLS
 
-#endif /* HB_LANGUAGE_H */
+#endif /* HB_FALLBACK_SHAPE_PRIVATE_HH */