If the 'asan' GYP variable is set to 1 on Mac, do not strip the __asan_init symbol from the binar...

chrome/chrome_exe.gypi

 # Copyright (c) 2011 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.
 
 {
   'target_defaults': {
     'variables': {
       'chrome_exe_target': 0,
     },
     'target_conditions': [
@@ skipping 61 matching lines @@
                 ],
                 'action': ['cp', '-f', '<@(_inputs)', '<@(_outputs)'],
                 'message': 'Copy first run complete sentinel file',
               },
             ],
           }, {  # 'OS!="win"
             'sources!': [
               'app/client_util.cc',
             ]
           }],
+          ['OS=="mac" and asan==1', {
+            'xcode_settings': {
+              # Override the outer definition of CHROMIUM_STRIP_SAVE_FILE.
+              'CHROMIUM_STRIP_SAVE_FILE': 'app/app_asan.saves',
+            },
+          }],
         ],
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'chrome',
       'type': 'executable',
       'mac_bundle': 1,
       'variables': {
@@ skipping 446 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }