Adding variable builder for mac_gn

masters/master.tryserver.chromium.mac/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 # Copyright 2014 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.
 
 # See master.experimental/slaves.cfg for documentation.
 
 def mac():
   cq_slaves = (
@@ skipping 17 matching lines @@
       'mac_nacl_sdk_build',
       'mac_optional_gpu_tests_rel',
   ]
 
   optional2_slaves = ['vm%d-m4' % i for i in [1025, 1026]]
   optional2_builders = [
       'mac_chromium_archive_rel_ng',
       'mac_chromium_asan_rel_ng',
       'mac_chromium_compile_rel_ng',
       'mac_deterministic',
+      'mac_chromium_asan_variable',
       'mac_chromium_variable',
-      'mac_chromium_asan_variable',
+      'mac_chromium_variable_gn',
   ]
 
   out = []
   out.extend(
     {
       'master': 'TryServerChromiumMac',
       'builder': cq_builders,
       'preferred_builder': cq_builders[i % len(cq_builders)],
       'hostname': slave,
       'os': 'mac',
@@ skipping 89 matching lines @@
       'pool': 'ios_cq_rel',
     } for slave in cq_slaves_rel]
 
   # TODO(lliabraa): Add test_slaves once we're actually running iOS tests on
   # the bots.
 
   return compile_slaves_dbg + compile_slaves_rel
 
 
 slaves = mac() + ios()