[ced] Suppress a compiler warning on Windows

third_party/ced/BUILD.gn

 # Copyright 2016 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.
 
 import("//testing/test.gni")
 
 config("ced_config") {
   include_dirs = [ "src" ]
   if (is_clang) {
     cflags = [ "-Wno-unused-function" ]
@@ skipping 26 matching lines @@
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
 
   public_configs = [ ":ced_config" ]
 
   if (is_win) {
     defines = [ "COMPILER_MSVC" ]
     cflags = [
       "/wd4005",  # Macro defined twice.
       "/wd4006",  # #undef expected an identifier.
+      "/wd4018",  # '<': signed/unsigned mismatch
       "/wd4309",  # Truncation of constant value.
     ]
   } else {
     defines = [ "COMPILER_GCC" ]
   }
 }
 
 test("ced_unittests") {
   sources = [
     "src/compact_enc_det/compact_enc_det_fuzz_test.cc",
@@ skipping 10 matching lines @@
   } else {
     defines = [ "COMPILER_GCC" ]
   }
 
   deps = [
     ":ced",
     "//testing/gtest",
     "//testing/gtest:gtest_main",
   ]
 }