Deprecate the unused AutoCleanupSettigsProto.clean_up_strategy policy.

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index a371fa06b78b4a934eedf70b06e1833da73bdea3..957f533c0de8ead218f48b71546b608fa55df956 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -3666,9 +3666,10 @@
         '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''',
+      'caption': '''Selects the strategy used to free up disk space during automatic clean-up (deprecated)''',
       '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.

[bartfab (slow), 2014/03/27 14:18:38]

Nit: Please add a sentence at the top of |desc| that says something like:

This policy is deprecated. <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome
OS</ex></ph> will always use the 'RemoveLRU' clean-up strategy.

[David Roche, 2014/04/18 22:31:57]

Done.

 
       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.