Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/autofit/afcjk.h

Index: third_party/freetype2/src/src/autofit/afcjk.h
diff --git a/third_party/freetype2/src/src/autofit/afcjk.h b/third_party/freetype2/src/src/autofit/afcjk.h
new file mode 100644
index 0000000000000000000000000000000000000000..e395e74a012620023e461d6575d70af775880f12
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+++ b/third_party/freetype2/src/src/autofit/afcjk.h
@@ -0,0 +1,141 @@
+/***************************************************************************/
+/*                                                                         */
+/*  afcjk.h                                                                */
+/*                                                                         */
+/*    Auto-fitter hinting routines for CJK writing system (specification). */
+/*                                                                         */
+/*  Copyright 2006-2015 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __AFCJK_H__
+#define __AFCJK_H__
+
+#include "afhints.h"
+#include "aflatin.h"
+
+
+FT_BEGIN_HEADER
+
+
+  /* the CJK-specific writing system */
+
+  AF_DECLARE_WRITING_SYSTEM_CLASS( af_cjk_writing_system_class )
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****              C J K   G L O B A L   M E T R I C S              *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  /*
+   *  CJK glyphs tend to fill the square.  So we have both vertical and
+   *  horizontal blue zones.  But some glyphs have flat bounding strokes that
+   *  leave some space between neighbour glyphs.
+   */
+
+#define AF_CJK_IS_TOP_BLUE( b ) \
+          ( (b)->properties & AF_BLUE_PROPERTY_CJK_TOP )
+#define AF_CJK_IS_HORIZ_BLUE( b ) \
+          ( (b)->properties & AF_BLUE_PROPERTY_CJK_HORIZ )
+#define AF_CJK_IS_RIGHT_BLUE  AF_CJK_IS_TOP_BLUE
+
+#define AF_CJK_MAX_WIDTHS  16
+
+
+#define AF_CJK_BLUE_ACTIVE      ( 1U << 0 ) /* zone height is <= 3/4px      */
+#define AF_CJK_BLUE_TOP         ( 1U << 1 ) /* result of AF_CJK_IS_TOP_BLUE */
+#define AF_CJK_BLUE_ADJUSTMENT  ( 1U << 2 ) /* used for scale adjustment    */
+                                            /* optimization                 */
+
+
+  typedef struct  AF_CJKBlueRec_
+  {
+    AF_WidthRec  ref;
+    AF_WidthRec  shoot; /* undershoot */
+    FT_UInt      flags;
+
+  } AF_CJKBlueRec, *AF_CJKBlue;
+
+
+  typedef struct  AF_CJKAxisRec_
+  {
+    FT_Fixed       scale;
+    FT_Pos         delta;
+
+    FT_UInt        width_count;                   /* number of used widths */
+    AF_WidthRec    widths[AF_CJK_MAX_WIDTHS];     /* widths array          */
+    FT_Pos         edge_distance_threshold;     /* used for creating edges */
+    FT_Pos         standard_width;           /* the default stem thickness */
+    FT_Bool        extra_light;           /* is standard width very light? */
+
+    /* used for horizontal metrics too for CJK */
+    FT_Bool        control_overshoot;
+    FT_UInt        blue_count;
+    AF_CJKBlueRec  blues[AF_BLUE_STRINGSET_MAX];
+
+    FT_Fixed       org_scale;
+    FT_Pos         org_delta;
+
+  } AF_CJKAxisRec, *AF_CJKAxis;
+
+
+  typedef struct  AF_CJKMetricsRec_
+  {
+    AF_StyleMetricsRec  root;
+    FT_UInt             units_per_em;
+    AF_CJKAxisRec       axis[AF_DIMENSION_MAX];
+
+  } AF_CJKMetricsRec, *AF_CJKMetrics;
+
+
+#ifdef AF_CONFIG_OPTION_CJK
+  FT_LOCAL( FT_Error )
+  af_cjk_metrics_init( AF_CJKMetrics  metrics,
+                       FT_Face        face );
+
+  FT_LOCAL( void )
+  af_cjk_metrics_scale( AF_CJKMetrics  metrics,
+                        AF_Scaler      scaler );
+
+  FT_LOCAL( FT_Error )
+  af_cjk_hints_init( AF_GlyphHints  hints,
+                     AF_CJKMetrics  metrics );
+
+  FT_LOCAL( FT_Error )
+  af_cjk_hints_apply( FT_UInt        glyph_index,
+                      AF_GlyphHints  hints,
+                      FT_Outline*    outline,
+                      AF_CJKMetrics  metrics );
+
+  /* shared; called from afindic.c */
+  FT_LOCAL( void )
+  af_cjk_metrics_check_digits( AF_CJKMetrics  metrics,
+                               FT_Face        face );
+
+  FT_LOCAL( void )
+  af_cjk_metrics_init_widths( AF_CJKMetrics  metrics,
+                              FT_Face        face );
+#endif /* AF_CONFIG_OPTION_CJK */
+
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFCJK_H__ */
+
+
+/* END */