Surface error messages from ONC parsing in about:policy.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 74f51d8c56e11461a1a168702e81a4312ae730e2..d2a8dee64685152c841b46a08047c9c36a5246f0 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1457,6 +1457,7 @@
         'browser/policy/cloud_policy_provider_unittest.cc',
         'browser/policy/cloud_policy_subsystem_unittest.cc',
         'browser/policy/config_dir_policy_provider_unittest.cc',
+        'browser/policy/configuration_policy_handler_chromeos_unittest.cc',
         'browser/policy/configuration_policy_pref_store_unittest.cc',
         'browser/policy/configuration_policy_provider_mac_unittest.cc',
         'browser/policy/configuration_policy_provider_win_unittest.cc',
@@ -2040,6 +2041,7 @@
           'sources/': [
             ['exclude', '^browser/chromeos/'],
             ['exclude', '^browser/oom_priority_manager_unittest.cc'],
+            ['exclude', '^browser/policy/configuration_policy_handler_chromeos_unittest.cc' ],
             ['exclude', '^browser/policy/device_policy_cache_unittest.cc'],
             ['exclude', '^browser/policy/enterprise_install_attributes_unittest.cc' ],
             ['exclude', '^browser/policy/network_configuration_updater_unittest.cc' ],