Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-fallback-shape.cc

Index: third_party/harfbuzz-ng/src/hb-fallback-shape.cc
diff --git a/third_party/harfbuzz-ng/src/hb-shape.cc b/third_party/harfbuzz-ng/src/hb-fallback-shape.cc
similarity index 50%
copy from third_party/harfbuzz-ng/src/hb-shape.cc
copy to third_party/harfbuzz-ng/src/hb-fallback-shape.cc
index a73977b46dacfd772486a6f27944c2c54f7ed8b1..2fd527f05f31ecb63939ec1d45020bcab6069ced 100644
--- a/third_party/harfbuzz-ng/src/hb-shape.cc
+++ b/third_party/harfbuzz-ng/src/hb-fallback-shape.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009  Red Hat, Inc.
+ * Copyright © 2011  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
@@ -21,45 +21,42 @@
  * 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
  */
 
-#include "hb-private.h"
-
-#include "hb-shape.h"
+#include "hb-fallback-shape-private.hh"
 
 #include "hb-buffer-private.hh"
 
-#include "hb-ot-shape.h"
+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)
+{
+  buffer->guess_properties ();
 
-#ifdef HAVE_GRAPHITE
-#include "hb-graphite.h"
-#endif
+  unsigned int count = buffer->len;
 
-HB_BEGIN_DECLS
+  for (unsigned int i = 0; i < count; i++)
+    hb_font_get_glyph (font, buffer->info[i].codepoint, 0, &buffer->info[i].codepoint);
 
+  buffer->clear_positions ();
 
-void
-hb_shape (hb_font_t    *font,
-	  hb_face_t    *face,
-	  hb_buffer_t  *buffer,
-	  hb_feature_t *features,
-	  unsigned int  num_features)
-{
-#if 0 && defined(HAVE_GRAPHITE)
-  hb_blob_t *silf_blob;
-  silf_blob = hb_face_get_table (face, HB_GRAPHITE_TAG_Silf);
-  if (hb_blob_get_length(silf_blob))
-  {
-    hb_graphite_shape(font, face, buffer, features, num_features);
-    hb_blob_destroy(silf_blob);
-    return;
+  for (unsigned int i = 0; i < count; i++) {
+    hb_font_get_glyph_advance_for_direction (font, buffer->info[i].codepoint,
+					     buffer->props.direction,
+					     &buffer->pos[i].x_advance,
+					     &buffer->pos[i].y_advance);
+    hb_font_subtract_glyph_origin_for_direction (font, buffer->info[i].codepoint,
+						 buffer->props.direction,
+						 &buffer->pos[i].x_offset,
+						 &buffer->pos[i].y_offset);
   }
-  hb_blob_destroy(silf_blob);
-#endif
-
-  hb_ot_shape (font, face, buffer, features, num_features);
-}
 
+  if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
+    hb_buffer_reverse (buffer);
 
-HB_END_DECLS
+  return TRUE;
+}