Added a policy writer for iOS Plists.

grit/format/policy_templates/writers/plist_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 xml.dom import minidom
 from grit.format.policy_templates.writers import plist_helper
 from grit.format.policy_templates.writers import xml_formatted_writer
 
@@ skipping 109 matching lines @@
     app_name = plist_helper.GetPlistFriendlyName(self.config['app_name'])
     self._AddStringKeyValuePair(dict, 'pfm_name', app_name)
     self._AddStringKeyValuePair(dict, 'pfm_description', '')
     self._AddStringKeyValuePair(dict, 'pfm_title', '')
     self._AddStringKeyValuePair(dict, 'pfm_version', '1')
     self._AddStringKeyValuePair(dict, 'pfm_domain',
                                 self.config['mac_bundle_id'])
 
     self._array = self._AddKeyValuePair(dict, 'pfm_subkeys', 'array')
 
-  def Init(self):
+  def CreatePlistDocument(self):
     dom_impl = minidom.getDOMImplementation('')
     doctype = dom_impl.createDocumentType(
         'plist',
         '-//Apple//DTD PLIST 1.0//EN',
         'http://www.apple.com/DTDs/PropertyList-1.0.dtd')
-    self._doc = dom_impl.createDocument(None, 'plist', doctype)
+    return dom_impl.createDocument(None, 'plist', doctype)
+
+  def Init(self):
+    self._doc = self.CreatePlistDocument()
     self._plist = self._doc.documentElement
 
   def GetTemplateText(self):
     return self.ToPrettyXml(self._doc)