Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/autofit/afcover.h

Index: third_party/freetype2/src/src/autofit/afcover.h
diff --git a/third_party/freetype2/src/src/autofit/afcover.h b/third_party/freetype2/src/src/autofit/afcover.h
new file mode 100644
index 0000000000000000000000000000000000000000..520e8a4ae0b3cf275c25275c276b1b9043d0eaf8
--- /dev/null
+++ b/third_party/freetype2/src/src/autofit/afcover.h
@@ -0,0 +1,105 @@
+/***************************************************************************/
+/*                                                                         */
+/*  afcover.h                                                              */
+/*                                                                         */
+/*    Auto-fitter coverages (specification only).                          */
+/*                                                                         */
+/*  Copyright 2013-2015 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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+  /* This header file can be included multiple times. */
+  /* Define `COVERAGE' as needed.                     */
+
+
+  /* Add new coverages here.  The first and second arguments are the   */
+  /* coverage name in lowercase and uppercase, respectively, followed  */
+  /* by a description string.  The last four arguments are the four    */
+  /* characters defining the corresponding OpenType feature.           */
+
+#if 0
+  /* XXX: It's not possible to define blue zone characters in advance. */
+  COVERAGE( alternative_fractions, ALTERNATIVE_FRACTIONS,
+            "alternative fractions",
+            'a', 'f', 'r', 'c' )
+#endif
+
+  COVERAGE( petite_capitals_from_capitals, PETITE_CAPITALS_FROM_CAPITALS,
+            "petite capitals from capitals",
+            'c', '2', 'c', 'p' )
+
+  COVERAGE( small_capitals_from_capitals, SMALL_CAPITALS_FROM_CAPITALS,
+            "small capitals from capitals",
+            'c', '2', 's', 'c' )
+
+#if 0
+  /* XXX: Only digits are in this coverage, however, both normal style */
+  /*      and oldstyle representation forms are possible.              */
+  COVERAGE( denominators, DENOMINATORS,
+            "denominators",
+            'd', 'n', 'o', 'm' )
+#endif
+
+#if 0
+  /* XXX: It's not possible to define blue zone characters in advance. */
+  COVERAGE( fractions, FRACTIONS,
+            "fractions",
+            'f', 'r', 'a', 'c' )
+#endif
+
+#if 0
+  /* XXX: Only digits are in this coverage, however, both normal style */
+  /*      and oldstyle representation forms are possible.              */
+  COVERAGE( numerators, NUMERATORS,
+            "numerators",
+            'n', 'u', 'm', 'r' )
+#endif
+
+  COVERAGE( ordinals, ORDINALS,
+            "ordinals",
+            'o', 'r', 'd', 'n' )
+
+  COVERAGE( petite_capitals, PETITE_CAPITALS,
+            "petite capitals",
+            'p', 'c', 'a', 'p' )
+
+  COVERAGE( ruby, RUBY,
+            "ruby",
+            'r', 'u', 'b', 'y' )
+
+  COVERAGE( scientific_inferiors, SCIENTIFIC_INFERIORS,
+            "scientific inferiors",
+            's', 'i', 'n', 'f' )
+
+  COVERAGE( small_capitals, SMALL_CAPITALS,
+            "small capitals",
+            's', 'm', 'c', 'p' )
+
+  COVERAGE( subscript, SUBSCRIPT,
+            "subscript",
+            's', 'u', 'b', 's' )
+
+  COVERAGE( superscript, SUPERSCRIPT,
+            "superscript",
+            's', 'u', 'p', 's' )
+
+  COVERAGE( titling, TITLING,
+            "titling",
+            't', 'i', 't', 'l' )
+
+#if 0
+  /* to be always excluded */
+  COVERAGE(nalt, 'n', 'a', 'l', 't'); /* Alternate Annotation Forms (?) */
+  COVERAGE(ornm, 'o', 'r', 'n', 'm'); /* Ornaments (?) */
+#endif
+
+
+/* END */