Added a PolicySchema class.

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 991 matching lines @@
         'browser/policy/configuration_policy_provider_test.cc',
         'browser/policy/configuration_policy_provider_test.h',
         'browser/policy/managed_mode_policy_provider_unittest.cc',
         'browser/policy/mock_policy_service.cc',
         'browser/policy/mock_policy_service.h',
         'browser/policy/policy_bundle_unittest.cc',
         'browser/policy/policy_loader_mac_unittest.cc',
         'browser/policy/policy_loader_win_unittest.cc',
         'browser/policy/policy_map_unittest.cc',
         'browser/policy/policy_path_parser_unittest.cc',
+        'browser/policy/policy_schema_unittest.cc',
         'browser/policy/policy_service_impl_unittest.cc',
         'browser/policy/policy_statistics_collector_unittest.cc',
         'browser/policy/preferences_mock_mac.cc',
         'browser/policy/preferences_mock_mac.h',
         'browser/policy/preg_parser_win_unittest.cc',
         'browser/policy/url_blacklist_manager_unittest.cc',
         'browser/predictors/autocomplete_action_predictor_table_unittest.cc',
         'browser/predictors/autocomplete_action_predictor_unittest.cc',
         'browser/predictors/resource_prefetch_predictor_unittest.cc',
         'browser/predictors/resource_prefetch_predictor_tables_unittest.cc',
@@ skipping 1500 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }