[ced] Suppress a compiler warning on Windows

third_party/ced/ced.gyp

 # Copyright (c) 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.
 
 {
   'includes': [
     '../../build/win_precompile.gypi',
   ],
   'targets': [
     {
@@ skipping 29 matching lines @@
           'src',
         ],
       },
       'conditions': [
         ['OS=="win"', {
           'direct_dependent_settings': {
             'defines': [
               'COMPILER_MSVC',
             ],
           },
-          'msvs_disabled_warnings': [4005, 4006, 4244, 4309, 4800, 4267],
+          'msvs_disabled_warnings': [4005, 4006, 4018, 4244, 4309, 4800, 4267],
         }, {
           'direct_dependent_settings': {
             'defines': [
               'COMPILER_GCC',
             ],
           },
         }],
       ],
     },
     {
       'target_name': 'ced_unittests',
       'type': 'executable',
       'dependencies': [
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/testing/gtest.gyp:gtest_main',
         'ced',
       ],
       'include_dirs': [
         '<(DEPTH)',
       ],
       'sources': [
         "src/compact_enc_det/compact_enc_det_fuzz_test.cc",
         "src/compact_enc_det/compact_enc_det_unittest.cc",
       ],
     },
   ],
 }