Update woff2 to 4e698b8

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
index 0047fefd3dcf5a0700788272cb3ba016410749ef..b7abd1953879eb7fd00dd5ee85254660573bb091 100644
--- a/third_party/woff2/BUILD.gn
+++ b/third_party/woff2/BUILD.gn
@@ -2,6 +2,12 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+config("woff2_warnings") {
+  if (!is_win || is_clang) {
+    cflags = [ "-Wno-unused-function" ]
+  }
+}
+
 source_set("woff2_dec") {
   sources = [
     "src/buffer.h",
@@ -15,10 +21,13 @@ source_set("woff2_dec") {
     "src/woff2_common.h",
     "src/woff2_dec.cc",
     "src/woff2_dec.h",
+    "src/woff2_out.cc",
+    "src/woff2_out.h",
   ]
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [ ":woff2_warnings" ]
 
   deps = [
     "//third_party/brotli",