Add ManagedUserSettingsService and a SupervisedUserPrefStore using it.

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 1082 matching lines @@
         'browser/policy/registry_dict_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',
         'browser/predictors/resource_prefetcher_unittest.cc',
         'browser/prefs/chrome_pref_service_unittest.cc',
         'browser/prefs/command_line_pref_store_unittest.cc',
         'browser/prefs/incognito_mode_prefs_unittest.cc',
+        'browser/prefs/supervised_user_pref_store_unittest.cc',
         'browser/prefs/pref_model_associator_unittest.cc',
         'browser/prefs/proxy_config_dictionary_unittest.cc',
         'browser/prefs/proxy_policy_unittest.cc',
         'browser/prefs/proxy_prefs_unittest.cc',
         'browser/prefs/scoped_user_pref_update_unittest.cc',
         'browser/prefs/session_startup_pref_unittest.cc',
         'browser/prerender/prerender_history_unittest.cc',
         'browser/prerender/prerender_manager_unittest.cc',
         'browser/prerender/prerender_tracker_unittest.cc',
         'browser/prerender/prerender_unittest.cc',
@@ skipping 1514 matching lines @@
           'sources/': [
             # OpenSSL build does not support firefox importer. See
             # http://crbug.com/64926
             ['exclude', '^browser/importer/'],
           ],
         }],
         ['enable_managed_users!=1', {
           'sources/': [
             ['exclude', '^browser/managed_mode/'],
           ],
+          'sources!': [
+            'browser/prefs/supervised_user_pref_store_unittest.cc',
+          ],
         }],
         ['safe_browsing!=1', {
           'sources/': [
             ['exclude', '^browser/extensions/blacklist_unittest.cc'],
           ],
         }],
       ],
       'target_conditions': [
         ['OS == "ios"', {
           'sources/': [
@@ skipping 113 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }