Fix report symbolization on swarming bots.

content/content_unittests.isolate

 # Copyright (c) 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.
 {
   'conditions': [
     ['OS=="android" or OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
           '../media/test/data/',
           'test/data/',
@@ skipping 72 matching lines @@
           '--test-launcher-bot-mode',
           '--asan=<(asan)',
           '--lsan=<(lsan)',
         ],
         'files': [
           '<(PRODUCT_DIR)/ffmpegsumo.dll',
           '<(PRODUCT_DIR)/osmesa.dll',
         ],
       },
     }],
+    ['OS=="mac" and asan==1', {
+      'variables': {
+        'files': [
+          '<(PRODUCT_DIR)/content_unittests.dSYM/',
+        ],
+      },
+    }],
     ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/content_unittests.exe.pdb',
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
     '../gin/v8.isolate',
   ],
 }