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diff --git a/gfx/harfbuzz/src/hb-shape-plan.hh b/gfx/harfbuzz/src/hb-shape-plan.hh
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+++ b/gfx/harfbuzz/src/hb-shape-plan.hh
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+/*
+ * Copyright © 2012,2018  Google, 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.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_SHAPE_PLAN_HH
+#define HB_SHAPE_PLAN_HH
+
+#include "hb.hh"
+#include "hb-shaper.hh"
+#include "hb-ot-shape.hh"
+
+
+struct hb_shape_plan_key_t
+{
+  hb_segment_properties_t  props;
+
+  const hb_feature_t      *user_features;
+  unsigned int             num_user_features;
+
+#ifndef HB_NO_OT_SHAPE
+  hb_ot_shape_plan_key_t   ot;
+#endif
+
+  hb_shape_func_t         *shaper_func;
+  const char              *shaper_name;
+
+  HB_INTERNAL bool init (bool                           copy,
+			 hb_face_t                     *face,
+			 const hb_segment_properties_t *props,
+			 const hb_feature_t            *user_features,
+			 unsigned int                   num_user_features,
+			 const int                     *coords,
+			 unsigned int                   num_coords,
+			 const char * const            *shaper_list);
+
+  HB_INTERNAL void fini () { hb_free ((void *) user_features); user_features = nullptr; }
+
+  HB_INTERNAL bool user_features_match (const hb_shape_plan_key_t *other);
+
+  HB_INTERNAL bool equal (const hb_shape_plan_key_t *other);
+};
+
+struct hb_shape_plan_t
+{
+  ~hb_shape_plan_t () { key.fini (); }
+  hb_object_header_t header;
+  hb_face_t *face_unsafe; /* We don't carry a reference to face. */
+  hb_shape_plan_key_t key;
+#ifndef HB_NO_OT_SHAPE
+  hb_ot_shape_plan_t ot;
+#endif
+};
+
+
+#endif /* HB_SHAPE_PLAN_HH */