Add optional mandatory policy setting for template generation

grit/format/policy_templates/writers/json_writer.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.
 
 import json
 
 from textwrap import TextWrapper
 from grit.format.policy_templates.writers import template_writer
 
@@ skipping 31 matching lines @@
   def WritePolicy(self, policy):
     if policy['type'] == 'external':
       # This type can only be set through cloud policy.
       return
     example_value_str = json.dumps(policy['example_value'], sort_keys=True)
 
     # Add comma to the end of the previous line.
     if not self._first_written:
       self._out[-2] += ','
 
+    if not self.CanBeMandatory(policy) and self.CanBeRecommended(policy):
+      line = '  // Note: this policy is supported only in recommended mode.'
+      self._out.append(line)
+      line = '  // The JSON file should be placed in %srecommended.' % \
+             self.config['linux_policy_path']
+      self._out.append(line)
+
     line = '  // %s' % policy['caption']
     self._out.append(line)
     self._out.append(HEADER_DELIMETER)
     description = self._text_wrapper.wrap(policy['desc'])
     self._out += description;
     line = '  //"%s": %s' % (policy['name'], example_value_str)
     self._out.append('')
     self._out.append(line)
     self._out.append('')
 
@@ skipping 11 matching lines @@
     self._first_written = True
     # Create the TextWrapper object once.
     self._text_wrapper = TextWrapper(
         initial_indent = '  // ',
         subsequent_indent = '  // ',
         break_long_words = False,
         width = 80)
 
   def GetTemplateText(self):
     return '\n'.join(self._out)