Generate example JSON policy configuration files

tools/grit/grit/format/policy_templates/writers/template_writer.py

 # Copyright (c) 2010 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.
 
 
 class TemplateWriter(object):
   '''Abstract base class for writing policy templates in various formats.
   The methods of this class will be called by PolicyTemplateGenerator.
   '''
 
@@ skipping 72 matching lines @@
     for policy in template:
       if policy['type'] == 'group':
         child_policies = self._GetPoliciesForWriter(policy)
         if child_policies:
           # Only write nonempty groups.
           self.BeginPolicyGroup(policy)
           for child_policy in child_policies:
             # Nesting of groups is currently not supported.
             self.WritePolicy(child_policy)
           self.EndPolicyGroup()
-      else:
+      elif self.IsPolicySupported(policy):
         self.WritePolicy(policy)
     self.EndTemplate()
     return self.GetTemplateText()
 
   def WritePolicy(self, policy):
     '''Appends the template text corresponding to a policy into the
     internal buffer.
 
     Args:
       policy: The policy as it is found in the JSON file.
@@ skipping 27 matching lines @@
     '''
     pass
 
   def GetTemplateText(self):
     '''Gets the content of the internal template buffer.
 
     Returns:
       The generated template from the the internal buffer as a string.
     '''
     raise NotImplementedError()