Add the missing version number comment for AndroidPolicyWriter

grit/format/policy_templates/writers/android_policy_writer.py

 #!/usr/bin/env python
 # Copyright (c) 2015 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 xml_formatted_writer
 from xml.dom import minidom
 from xml.sax import saxutils as xml_escape
 
@@ skipping 70 matching lines @@
     items = policy.get('items')
     if items is not None:
       entries = [ item['caption'] for item in items ]
       values = [ item['value'] for item in items ]
       self.AddStringArrayResource(name + 'Entries', entries)
       self.AddStringArrayResource(name + 'Values', values)
 
   def BeginTemplate(self):
     comment_text = 'DO NOT MODIFY THIS FILE DIRECTLY!\n' \
                    'IT IS GENERATED FROM policy_templates.json.'
+    if self._GetChromiumVersionString():
+      comment_text += "\n" + self.config["build"] + " version: "\
+                   + self._GetChromiumVersionString()

[Joao da Silva, 2015/11/02 14:37:41]

Can you add a test for this

     comment_node = self._doc.createComment(comment_text)
     self._doc.insertBefore(comment_node, self._resources)
 
   def Init(self):
     impl = minidom.getDOMImplementation()
     self._doc = impl.createDocument(None, 'resources', None)
     self._resources = self._doc.documentElement
 
   def GetTemplateText(self):
     return self.ToPrettyXml(self._doc)