Fixup mojo dylibs to support mojo in content

chrome/chrome.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=="linux"', {
       'variables': {
         'isolate_dependency_tracked': [
           '<(PRODUCT_DIR)/libffmpegsumo.so',
           '<(PRODUCT_DIR)/libosmesa.so',
@@ skipping 28 matching lines @@
         ],
       },
     }],
     ['OS=="mac"', {
       'variables': {
         'command': [
           '<(PRODUCT_DIR)/<(mac_product_name).app/Contents/MacOS/<(mac_product_name)',
         ],
         'isolate_dependency_tracked': [
           '<(PRODUCT_DIR)/ffmpegsumo.so',
+          '<(PRODUCT_DIR)/libmojo_system.dylib',
         ],
         'isolate_dependency_untracked': [
           '<(PRODUCT_DIR)/<(mac_product_name) Framework.framework/',
           '<(PRODUCT_DIR)/<(mac_product_name) Helper.app/',
           '<(PRODUCT_DIR)/<(mac_product_name).app/',
         ],
       },
     }],
     ['OS=="win"', {
       'variables': {
@@ skipping 12 matching lines @@
           '<(PRODUCT_DIR)/osmesa.dll',
           '<(PRODUCT_DIR)/ppGoogleNaClPluginChrome.dll',
         ],
       },
     }],
   ],
   'includes': [
     '../third_party/icu/icu.isolate',
   ],
 }