[Android app restrictions] Hide unused and improve descriptions.

components/policy/tools/generate_policy_source.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.
 
 '''python %prog [options] platform chromium_os_flag template
 
 platform specifies which platform source is being generated for
   and can be one of (win, mac, linux)
 chromium_os_flag should be 1 if this is a Chromium OS build
@@ skipping 56 matching lines @@
                valid_tags):
     self.id = policy['id']
     self.name = policy['name']
     self.tags = policy.get('tags', None)
     self._CheckTagsValidity(valid_tags)
     features = policy.get('features', {})
     self.can_be_recommended = features.get('can_be_recommended', False)
     self.can_be_mandatory = features.get('can_be_mandatory', True)
     self.is_deprecated = policy.get('deprecated', False)
     self.is_device_only = policy.get('device_only', False)
+    self.is_future = policy.get('future', False)
     self.schema = policy.get('schema', {})
     self.has_enterprise_default = 'default_for_enterprise_users' in policy
     if self.has_enterprise_default:
       self.enterprise_default = policy['default_for_enterprise_users']
 
     expected_platform = 'chrome_os' if is_chromium_os else os.lower()
     self.platforms = []
     for platform, version_range in [ p.split(':')
                                      for p in policy['supported_on'] ]:
       if self.is_device_only and platform != 'chrome_os':
@@ skipping 1077 matching lines @@
     if policy.items is not None:
       WriteItemsDefinition(policy_name)
 
     f.write('        android:restrictionType="%s"/>' % policy.restriction_type)
     f.write('\n\n')
 
   # _WriteAppRestrictions body
   f.write('<restrictions xmlns:android="'
           'http://schemas.android.com/apk/res/android">\n\n')
   for policy in policies:
-    if policy.is_supported and policy.restriction_type != 'invalid':
+    if (policy.is_supported and policy.restriction_type != 'invalid' and
+         not policy.is_deprecated and not policy.is_future):
       WriteAppRestriction(policy)
   f.write('</restrictions>')
 
 if __name__ == '__main__':
   sys.exit(main())