Add a chromium version to policy template files.

grit/format/policy_templates/writers/plist_strings_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.
 
 
 from grit.format.policy_templates.writers import plist_helper
 from grit.format.policy_templates.writers import template_writer
 
 
 def GetWriter(config):
   '''Factory method for creating PListStringsWriter objects.
   See the constructor of TemplateWriter for description of
   arguments.
   '''
   return PListStringsWriter(['mac'], config)
 
 
 class PListStringsWriter(template_writer.TemplateWriter):
   '''Outputs localized string table files for the Mac policy file.
   These files are named Localizable.strings and they are in the
   [lang].lproj subdirectories of the manifest bundle.
   '''
 
+  def WriteComment(self, comment):
+    self._out.append('/* ' + comment + ' */' )
+
   def _AddToStringTable(self, item_name, caption, desc):
     '''Add a title and a description of an item to the string table.
 
     Args:
       item_name: The name of the item that will get the title and the
         description.
       title: The text of the title to add.
       desc: The text of the description to add.
     '''
     caption = caption.replace('"', '\\"')
@@ skipping 21 matching lines @@
       # Append the captions of enum items to the description string.
       item_descs = []
       for item in policy['items']:
         item_descs.append(str(item['value']) + ' - ' + item['caption'])
       desc = '\n'.join(item_descs) + '\n' + desc
 
     self._AddToStringTable(policy['name'], policy['label'], desc)
 
   def BeginTemplate(self):
     app_name = plist_helper.GetPlistFriendlyName(self.config['app_name'])
+    if self._GetChromiumVersionString() is not None:
+      self.WriteComment(self.config['build'] + ''' version: ''' + \
+          self._GetChromiumVersionString())
     self._AddToStringTable(
         app_name,
         self.config['app_name'],
         self.messages['mac_chrome_preferences']['text'])
 
   def Init(self):
     # A buffer for the lines of the string table being generated.
     self._out = []
 
   def GetTemplateText(self):
     return '\n'.join(self._out)