Add woff2 to src/third_party

third_party/woff2/BUILD.gn

Index: third_party/woff2/BUILD.gn
diff --git a/third_party/woff2/BUILD.gn b/third_party/woff2/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..c1495be7ca0f10e41d4dc985e516a9f94cf0157b
--- /dev/null
+++ b/third_party/woff2/BUILD.gn
@@ -0,0 +1,33 @@
+# Copyright 2015 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.
+
+source_set("woff2_dec") {
+  sources = [
+    "src/buffer.h",
+    "src/round.h",
+    "src/store_bytes.h",
+    "src/table_tags.cc",
+    "src/table_tags.h",
+    "src/woff2_common.h",
+    "src/woff2_dec.cc",
+    "src/woff2_dec.h",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  deps = [
+    "//third_party/brotli",
+  ]
+
+  include_dirs = [
+    "src",
+    "//third_party/brotli/dec",
+  ]
+
+  # TODO(ksakamoto): http://crbug.com/167187
+  if (is_win) {
+    cflags = [ "/wd4267" ]  # Conversion from size_t to 'type'.
+  }
+}