V8 Buildbot: Add mac64 asan trybot.

masters/master.tryserver.v8/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright 2013 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.
 
 slaves = []
 
 slaves.extend([
@@ skipping 60 matching lines @@
     'hostname': 'vm%d-m4' % i,
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   } for i in range(204, 207) + [259, 261, 262]
 ])
 
 slaves.extend([
   {
     'master': 'V8TryServer',
-    'builder': ['v8_mac_rel', 'v8_mac_dbg', 'v8_mac64_rel', 'v8_mac64_dbg'],
+    'builder': [
+      'v8_mac_rel',
+      'v8_mac_dbg',
+      'v8_mac64_rel',
+      'v8_mac64_dbg',
+      'v8_mac64_asan_rel',
+    ],
     'hostname': name,
     'os': 'mac',
     'version': '10.6',
     'bits': '64',
   } for name in ['vm660-m4', 'vm820-m4', 'vm880-m4']
 ])
 
 slaves.extend([
   {
     'master': 'V8TryServer',
     'builder': [
       'v8_linux_layout_dbg',
       'v8_linux_arm64_rel',
       'v8_linux64_msan_rel',
     ],
     'hostname': 'build%d-m4' % i,
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   } for i in range(45, 48)
 ])