Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/sfnt/ttmtx.h

Index: third_party/freetype2/src/src/sfnt/ttmtx.h
diff --git a/third_party/freetype2/src/src/sfnt/ttmtx.h b/third_party/freetype2/src/src/sfnt/ttmtx.h
new file mode 100644
index 0000000000000000000000000000000000000000..096ee062cf078ba14384c65fd6951d7459725bd3
--- /dev/null
+++ b/third_party/freetype2/src/src/sfnt/ttmtx.h
@@ -0,0 +1,55 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ttmtx.h                                                                */
+/*                                                                         */
+/*    Load the metrics tables common to TTF and OTF fonts (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 __TTMTX_H__
+#define __TTMTX_H__
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_STREAM_H
+#include FT_INTERNAL_TRUETYPE_TYPES_H
+
+
+FT_BEGIN_HEADER
+
+
+  FT_LOCAL( FT_Error )
+  tt_face_load_hhea( TT_Face    face,
+                     FT_Stream  stream,
+                     FT_Bool    vertical );
+
+
+  FT_LOCAL( FT_Error )
+  tt_face_load_hmtx( TT_Face    face,
+                     FT_Stream  stream,
+                     FT_Bool    vertical );
+
+
+  FT_LOCAL( void )
+  tt_face_get_metrics( TT_Face     face,
+                       FT_Bool     vertical,
+                       FT_UInt     gindex,
+                       FT_Short*   abearing,
+                       FT_UShort*  aadvance );
+
+FT_END_HEADER
+
+#endif /* __TTMTX_H__ */
+
+
+/* END */