Another shot at using the new asan flag

chrome/chrome_tests.gypi

 # Copyright (c) 2012 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2479 matching lines @@
                 'WARNING_CFLAGS': [
                   # swig creates code with self assignments.
                   '-Wno-self-assign',
                 ],
               },
               'cflags': [
                 '-Wno-self-assign',
               ],
             }],
             ['asan==1', {
-              'cflags!': [ '-faddress-sanitizer' ],
+              'cflags!': [ '-faddress-sanitizer', '-fsanitize=address', ],
               'xcode_settings': {
                 'OTHER_CFLAGS!': [
-                  '-faddress-sanitizer',
+                  '-faddress-sanitizer', '-fsanitize=address',
                 ],
               },
             }],
           ],
           'actions': [
             {
               'variables' : {
                 'swig_args': [ '-I..',
                                '-python',
                                '-c++',
@@ skipping 288 matching lines @@
             'sync_integration_tests.isolate',
           ],
           'sources': [
             'sync_integration_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }