Allow setting of user and device policies in functional tests

chrome/test/functional/policy_test_cases.py

 #!/usr/bin/env python
 # Copyright (c) 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.
 
 # This data is in a separate file so that src/chrome/app/policy/PRESUBMIT.py
 # can load it too without having to load pyautolib.
 
 # DO NOT import pyauto from here! This file is required to run a presubmit
 # scripts that will always fail if pyautolib isn't available, which is common.
 
 
 class PolicyPrefsTestCases(object):
   """A list of test cases for policy_prefs_ui.py."""
 
   [BROWSER, SEARCH_ENGINES, PASSWORDS, AUTOFILL, CONTENT, HOMEPAGE, LANGUAGES,
    ACCOUNTS] = range(8)
 
   # Each policy has an entry with a tuple (Pref, Value, Pages, OS)
   #
-  # |Pref| is the preference key for simple policies that map directly to a
+  # |Pref| is the preference key for simple user policies that map directly to a
   #        preference (Refer to
   #        chrome/browser/policy/configuration_policy_handler_list.cc).
   #        Otherwise, set as None.
   #
   # |Value| is the value the policy should have when it is enforced.
   #
   # |Pages| is a list with integer indices into |settings_pages|, and lists all
   #         the pages that should display the managed-banner.
   #         Leave empty if this policy doesn't display anything visible in
   #         the settings.
   #
   # |OS| is a list of platforms where this policy should be tested. Valid
   #      platforms are 'win', 'mac', 'linux', and 'chromeos'. The list can be
   #      empty to skip the policy or set to OS_ALL if applicable to all
   #      platforms.
+  #
+  # ChromeOS device policies are also listed but are currently not tested by
+  # policy_prefs_ui.py.
   [INDEX_PREF, INDEX_VALUE, INDEX_PAGES, INDEX_OS] = range(4)
   OS_ALL = ['win', 'mac', 'linux', 'chromeos']
   policies = {
     'HomepageLocation':
         ('kHomePage', 'http://chromium.org', [HOMEPAGE], OS_ALL),
     'HomepageIsNewTabPage':
         ('kHomePageIsNewTabPage', True, [HOMEPAGE], OS_ALL),
     # TODO(joaodasilva): Couldn't verify on linux.
     'DefaultBrowserSettingEnabled':
         ('kDefaultBrowserSettingEnabled', False, [], ['win', 'mac', 'linux']),
@@ skipping 223 matching lines @@
     'DeviceAutoUpdateDisabled': (None, True, [], ['chromeos']),
 
     # Chrome Frame policies:
     'ChromeFrameRendererSettings': (None, 0, [], []),
     'RenderInChromeFrameList': (None, ['google.com'], [], []),
     'RenderInHostList': (None, ['google.com'], [], []),
     'ChromeFrameContentTypes': (None, ['text/xml'], [], []),
     'GCFUserDataDir': (None, '${user_name}/test-frame', [], []),
     'AdditionalLaunchParameters': (None, '--enable-media-stream', [], []),
   }