Compile the skia library for windows using gn.

third_party/sfntly/BUILD.gn

 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 declare_args() {
 }
 
 import("../third_party.gni")
 
@@ skipping 52 matching lines @@
     "../externals/sfntly/cpp/src/sfntly/table/subtable.cc",
     "../externals/sfntly/cpp/src/sfntly/table/table.cc",
     "../externals/sfntly/cpp/src/sfntly/table/table_based_table_builder.cc",
     "../externals/sfntly/cpp/src/sfntly/table/truetype/glyph_table.cc",
     "../externals/sfntly/cpp/src/sfntly/table/truetype/loca_table.cc",
     "../externals/sfntly/cpp/src/sfntly/tag.cc",
     "../externals/sfntly/cpp/src/sfntly/tools/subsetter/glyph_table_subsetter.cc",
     "../externals/sfntly/cpp/src/sfntly/tools/subsetter/subsetter.cc",
     "../externals/sfntly/cpp/src/sfntly/tools/subsetter/table_subsetter_impl.cc",
   ]
+
+  if (is_win) {
+    defines += [ "WIN32", "NOMINMAX" ]

[mtklein, 2016/09/14 21:25:14]

Probably do not need NOMINMAX again.

Better check WIN32 matters too?

[herb_g, 2016/09/16 19:54:15]

Done.

+    #cflags += [
+    #  "/wd4267",
+    #  "/wd4244",

[mtklein, 2016/09/14 21:25:14]

Can you make the template in third_party/third_party.gni suppress all warnings?

[herb_g, 2016/09/16 19:54:15]

Done.

+    #]
+    cflags_cc = [ "/EHsc", ]

[mtklein, 2016/09/14 21:25:14]

Let's confirm SFNTLY_NO_EXCEPTION doesn't work enough?

[herb_g, 2016/09/16 19:54:15]

Done.

+  }
 }