Load mac sandbox definitions from resources instead of the bundle.

content/content_tests.gypi

Index: content/content_tests.gypi
diff --git a/content/content_tests.gypi b/content/content_tests.gypi
index a7a2df1cfa1b0e03c577513e63d66d18f919bd20..cbe30c5fdf1ed5fdfd3c8f414c2798af6da163df 100644
--- a/content/content_tests.gypi
+++ b/content/content_tests.gypi
@@ -124,6 +124,7 @@
         'content_plugin',
         'content_renderer',
         'test_support_content',
+        'content_resources.gyp:content_resources',
         '../base/base.gyp:test_support_base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../crypto/crypto.gyp:crypto',
@@ -216,6 +217,11 @@
         'common/process_watcher_unittest.cc',
         'common/property_bag_unittest.cc',
         'common/resource_dispatcher_unittest.cc',
+        'common/sandbox_mac_diraccess_unittest.mm',
+        'common/sandbox_mac_fontloading_unittest.mm',
+        'common/sandbox_mac_unittest_helper.h',
+        'common/sandbox_mac_unittest_helper.mm',
+        'common/sandbox_mac_system_access_unittest.mm',
         'gpu/gpu_info_collector_unittest.cc',
         'gpu/gpu_info_collector_unittest_win.cc',
         'renderer/active_notification_tracker_unittest.cc',