Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/gxvalid/gxverror.h

Index: third_party/freetype2/src/src/gxvalid/gxverror.h
diff --git a/third_party/freetype2/src/src/gxvalid/gxverror.h b/third_party/freetype2/src/src/gxvalid/gxverror.h
new file mode 100644
index 0000000000000000000000000000000000000000..6bbc23aa03496de682649a3ecde64b4501ea59f4
--- /dev/null
+++ b/third_party/freetype2/src/src/gxvalid/gxverror.h
@@ -0,0 +1,51 @@
+/***************************************************************************/
+/*                                                                         */
+/*  gxverror.h                                                             */
+/*                                                                         */
+/*    TrueTypeGX/AAT validation module error codes (specification only).   */
+/*                                                                         */
+/*  Copyright 2004-2015 by                                                 */
+/*  suzuki toshiya, Masatake YAMATO, Red Hat K.K.,                         */
+/*  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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+/***************************************************************************/
+/*                                                                         */
+/* gxvalid is derived from both gxlayout module and otvalid module.        */
+/* Development of gxlayout is supported by the Information-technology      */
+/* Promotion Agency(IPA), Japan.                                           */
+/*                                                                         */
+/***************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This file is used to define the OpenType validation module error      */
+  /* enumeration constants.                                                */
+  /*                                                                       */
+  /*************************************************************************/
+
+#ifndef __GXVERROR_H__
+#define __GXVERROR_H__
+
+#include FT_MODULE_ERRORS_H
+
+#undef __FTERRORS_H__
+
+#undef  FT_ERR_PREFIX
+#define FT_ERR_PREFIX  GXV_Err_
+#define FT_ERR_BASE    FT_Mod_Err_GXvalid
+
+#include FT_ERRORS_H
+
+#endif /* __GXVERROR_H__ */
+
+
+/* END */