[libfuzzer] disable nacl in all libfuzzer builds

tools/mb/mb_config.pyl

 # 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.
 
 {
   # This is a map of buildbot master names -> buildbot builder names ->
   # config names (where each config name is a key in the 'configs' dict,
   # below). MB uses this dict to look up which config to use for a given bot.
   'masters': {
     # Take care when changing any of these builders to ensure that you do not
@@ skipping 1101 matching lines @@
     'gyp_release_trybot': [
       'gyp', 'release_trybot',
     ],
 
     'gyp_release_trybot_x64': [
       'gyp', 'release_trybot', 'x64',
     ],
 
     'gn_release_libfuzzer_asan': [
       'gn', 'release', 'libfuzzer', 'asan', 'proprietary_codecs', 'pdf_xfa',
+      'disable_nacl',
     ],
 
     'gn_release_libfuzzer_msan': [
       'gn', 'release', 'libfuzzer', 'msan', 'proprietary_codecs', 'pdf_xfa',
+      'disable_nacl',
     ],
     'gn_release_libfuzzer_ubsan': [
       'gn', 'release', 'libfuzzer', 'ubsan_security', 'proprietary_codecs', 
-      'pdf_xfa',
+      'pdf_xfa', 'disable_nacl',
     ],
 
     'gn_release_drmemory_drfuzz_x86': [
       'gn', 'release', 'drmemory', 'drfuzz', 'x86', 'proprietary_codecs',
      ],
     'gn_release_drmemory_drfuzz': [
       'gn', 'release', 'drmemory', 'drfuzz', 'proprietary_codecs',
     ],
 
     'gyp_valgrind_release_bot': [
@@ skipping 624 matching lines @@
       'gn_args': 'is_component_build=true enable_iterator_debugging=false',
       'gyp_defines': 'component=shared_library build_for_tool=drmemory',
     },
 
     'valgrind': {
       # TODO: add gn_args for 'build_for_tool=memcheck'
       'gyp_defines': 'build_for_tool=memcheck',
     }
   },
 }