Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/include/freetype/internal/services/svotval.h

Index: third_party/freetype2/src/include/freetype/internal/services/svotval.h
diff --git a/third_party/freetype2/src/include/freetype/internal/services/svotval.h b/third_party/freetype2/src/include/freetype/internal/services/svotval.h
new file mode 100644
index 0000000000000000000000000000000000000000..a82a6420fd7faa57647c6ec806323582ae01b9be
--- /dev/null
+++ b/third_party/freetype2/src/include/freetype/internal/services/svotval.h
@@ -0,0 +1,55 @@
+/***************************************************************************/
+/*                                                                         */
+/*  svotval.h                                                              */
+/*                                                                         */
+/*    The FreeType OpenType validation service (specification).            */
+/*                                                                         */
+/*  Copyright 2004-2015 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 __SVOTVAL_H__
+#define __SVOTVAL_H__
+
+#include FT_OPENTYPE_VALIDATE_H
+#include FT_INTERNAL_VALIDATE_H
+
+FT_BEGIN_HEADER
+
+
+#define FT_SERVICE_ID_OPENTYPE_VALIDATE  "opentype-validate"
+
+
+  typedef FT_Error
+  (*otv_validate_func)( FT_Face volatile  face,
+                        FT_UInt           ot_flags,
+                        FT_Bytes         *base,
+                        FT_Bytes         *gdef,
+                        FT_Bytes         *gpos,
+                        FT_Bytes         *gsub,
+                        FT_Bytes         *jstf );
+
+
+  FT_DEFINE_SERVICE( OTvalidate )
+  {
+    otv_validate_func  validate;
+  };
+
+  /* */
+
+
+FT_END_HEADER
+
+
+#endif /* __SVOTVAL_H__ */
+
+
+/* END */