[OTS] Add support for the MATH table.

ots-common.gypi

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'ots_sources': [
       'include/ots-memory-stream.h',
       'include/opentype-sanitiser.h',
       'src/cff.cc',
@@ skipping 27 matching lines @@
       'src/kern.cc',
       'src/kern.h',
       'src/layout.cc',
       'src/layout.h',
       'src/loca.cc',
       'src/loca.h',
       'src/ltsh.cc',
       'src/ltsh.h',
       'src/maxp.cc',
       'src/maxp.h',
+      'src/math.cc',
+      'src/math_.h',
       'src/metrics.cc',
       'src/metrics.h',
       'src/name.cc',
       'src/name.h',
       'src/os2.cc',
       'src/os2.h',
       'src/ots.cc',
       'src/ots.h',
       'src/post.cc',
       'src/post.h',
       'src/prep.cc',
       'src/prep.h',
       'src/vdmx.cc',
       'src/vdmx.h',
       'src/vhea.cc',
       'src/vhea.h',
       'src/vmtx.cc',
       'src/vmtx.h',
       'src/vorg.cc',
       'src/vorg.h',
       'src/woff2.cc',
       'src/woff2.h',
     ],
     'ots_include_dirs': [
       'include',
     ],
   },
 }