[Mac] Rebuild app shims when they fail to dyload Chrome Framework.

chrome/chrome.gyp

 # 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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 268 matching lines @@
             '..',
           ],
         },  # target app_mode_app_support
         {
           # This produces the template for app mode loader bundles. It's a
           # template in the sense that parts of it need to be "filled in" by
           # Chrome before it can be executed.
           'target_name': 'app_mode_app',
           'type': 'executable',
           'mac_bundle' : 1,
-          'variables': { 'enable_wexit_time_destructors': 1, },
+          'variables': {
+            'enable_wexit_time_destructors': 1,
+            'mac_real_dsym': 1,
+          },
           'product_name': 'app_mode_loader',
           'dependencies': [
             'app_mode_app_support',
             'infoplist_strings_tool',
           ],
           'sources': [
             'app/app_mode_loader_mac.mm',
             'app/app_mode-Info.plist',
           ],
           'include_dirs': [
@@ skipping 552 matching lines @@
               'sources': [
                 'service/cloud_print/print_system_dummy.cc',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }