Flip Mac beta, stable configs to use GN.

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': {
     'chromeos.chrome': {
@@ skipping 710 matching lines @@
       ],
       'win64': 'gn_official_x64',
       'win64-clang': 'gn_official_clang_x64',
       'win64-pgo': [
         'gn_official_chrome_pgo_phase_1_x64',
         'gn_official_chrome_pgo_phase_2_x64',
       ],
     },
 
     'official.desktop.continuous': {
-      'mac beta': 'gyp_official',
-      'mac stable': 'gyp_official',
+      'mac beta': 'gn_official',
+      'mac stable': 'gn_official',
       'mac trunk': 'gn_official',
       'precise64 beta': 'gn_official',
       'precise64 stable': 'gn_official',
       'precise64 trunk': 'gn_official',
       'win beta': 'gn_official_six_concurrent_links',
       'win stable': 'gn_official_six_concurrent_links',
       'win trunk': 'gn_official_six_concurrent_links',
       'win64 trunk': 'gn_official_x64_six_concurrent_links',
     },
 
@@ skipping 697 matching lines @@
     ],
 
     'gn_msan_edge_release_bot': [
       'gn', 'msan', 'edge', 'release_bot',
     ],
 
     'gn_msan_no_origins_edge_release_bot': [
       'gn', 'msan_no_origins', 'edge', 'release_bot',
     ],
 
-    'gyp_official': [
-      'gyp', 'official',
-    ],
-
     'gn_official_goma_chromeos': [
       'gn', 'official', 'goma', 'chromeos',
     ],
 
     'gn_official_syzyasan_x86': [
       'gn', 'official', 'syzyasan', 'x86',
     ],
 
     'gn_official_six_concurrent_links': [
       'gn', 'official', 'six_concurrent_links',
@@ skipping 1008 matching lines @@
     },
 
     'drfuzz': { 'gn_args': 'use_drfuzz=true' },
 
     'drmemory': {
       'gn_args': 'is_component_build=true enable_iterator_debugging=false',
       'gyp_defines': 'component=shared_library build_for_tool=drmemory',
     },
   },
 }