Extract interfaces and members renaming logic to a new HtmlRenamer class.

lib/dom/scripts/database.py

 #!/usr/bin/python
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """Module to manage IDL files."""
 
 import copy
 import pickle
 import logging
@@ skipping 207 matching lines @@
       raise RuntimeError('Interface %s not found' % interface_name)
     self._interfaces_to_delete.append(interface_name)
     del self._all_interfaces[interface_name]
 
   def _DeleteInterfaceFile(self, interface_name):
     """Actual file deletion"""
     file_path = self._FilePath(interface_name)
     if os.path.exists(file_path):
       _logger.debug('deleting %s' % file_path)
       os.remove(file_path)
+
+  def Hierarchy(self, interface):
+    yield interface
+    for parent in interface.parents:
+      parent_name = parent.type.id
+      if not self.HasInterface(parent.type.id):
+        continue
+      for parent_interface in self.Hierarchy(self.GetInterface(parent.type.id)):
+        yield parent_interface