Deprecate the unused AutoCleanupSettigsProto.clean_up_strategy policy.

components/policy/resources/policy_templates.json

 {
 # policy_templates.json - Metafile for policy templates
 #
 # The content of this file is evaluated as a Python expression.
 #
 # This file is used as input to generate the following policy templates:
 # ADM, ADMX+ADML, MCX/plist and html documentation.
 #
 # Policy templates are user interface definitions or documents about the
 # policies that can be used to configure Chrome. Each policy is a name-value
@@ skipping 3642 matching lines @@
           'name': 'RemoveLRU',
           'value': 'remove-lru',
           'caption': '''Least recently used users are removed until there is enough free space''',
         },
         {
           'name': 'RemoveLRUIfDormant',
           'value': 'remove-lru-if-dormant',
           'caption': '''Least recently used users who have not logged in within last 3 months are removed until there is enough free space''',
         },
       ],
-      'supported_on': ['chrome_os:32-'],
+      'supported_on': ['chrome_os:32-35'],
       'device_only': True,
       'features': {
         'dynamic_refresh': True,
         'per_profile': False,
       },
+      'deprecated': True,
       'example_value': 'remove-lru',
       'id': 246,
-      'caption': '''Selects the strategy used to free up disk space during automatic clean-up''',
-      'desc': '''Controls the automatic clean-up behavior on <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> devices. Automatic clean-up is triggered when the amount of free disk space reaches a critical level to recover some disk space.
+      'caption': '''Selects the strategy used to free up disk space during automatic clean-up (deprecated)''',
+      'desc': '''This policy is deprecated. <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> will always use the 'RemoveLRU' clean-up strategy.
+
+      Controls the automatic clean-up behavior on <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> devices. Automatic clean-up is triggered when the amount of free disk space reaches a critical level to recover some disk space.
 
       If this policy is set to 'RemoveLRU', the automatic clean-up will keep removing users from the device in least-recently-logged-in order until there is enough free space.
 
       If this policy is set to 'RemoveLRUIfDormant', the automatic clean-up will keep removing users who have not logged in for at least 3 months in least-recently-logged-in order until there is enough free space.
 
       If this policy is not set, automatic clean-up uses the default built-in strategy. Currently, it is the 'RemoveLRUIfDormant' strategy.'''
     },
     {
       'name': 'ReportDeviceVersionInfo',
       'type': 'main',
@@ skipping 2737 matching lines @@
       'desc': '''Text appended in parentheses to the policy name to indicate that it has been deprecated''',
       'text': 'deprecated',
     },
     'doc_recommended': {
       'desc': '''Text appended in parentheses next to the policies top-level container to indicate that those policies are of the Recommended level''',
       'text': 'Default Settings (users can override)',
     },
   },
   'placeholders': [],
 }