Reapply 12799.

lib/html/scripts/htmlrenamer.py

 #!/usr/bin/python
 # Copyright (c) 2012, 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.
 
-_html_interface_renames = {
+html_interface_renames = {
     'DOMFormData': 'FormData',
     'DOMWindow': 'Window',
     'WebKitAnimation': 'Animation',
     'WebKitAnimationEvent': 'AnimationEvent',
     'WebKitAnimationList': 'AnimationList',
     'WebKitBlobBuilder': 'BlobBuilder',
     'WebKitCSSKeyframeRule': 'CSSKeyframeRule',
     'WebKitCSSKeyframesRule': 'CSSKeyframesRule',
     'WebKitCSSMatrix': 'CSSMatrix',
     'WebKitCSSTransformValue': 'CSSTransformValue',
@@ skipping 254 matching lines @@
 
 class HtmlRenamer(object):
   def __init__(self, database):
     self._database = database
 
   def RenameInterface(self, interface):
     if interface.id.startswith('HTML'):
       if any(interface.id in ['Element', 'Document']
              for interface in self._database.Hierarchy(interface)):
         return interface.id[len('HTML'):]
-    elif interface.id in _html_interface_renames:
-      return _html_interface_renames[interface.id]
+    elif interface.id in html_interface_renames:
+      return html_interface_renames[interface.id]
     return interface.id
 
   def RenameMember(self, interface_name, member, member_prefix=''):
     """
     Returns the name of the member in the HTML library or None if the member is
     suppressed in the HTML library
     """
     interface = self._database.GetInterface(interface_name)
 
     if self._FindMatch(interface, member, member_prefix, _removed_html_members):
       return None
 
     name = self._FindMatch(interface, member, member_prefix,
                            _renamed_html_members)
     target_name = _renamed_html_members[name] if name else member
     if self._FindMatch(interface, member, member_prefix, _private_html_members):
       if not target_name.startswith('$dom_'):  # e.g. $dom_svgClassName
         target_name = '$dom_' + target_name
     return target_name
 
   def _FindMatch(self, interface, member, member_prefix, candidates):
     for interface in self._database.Hierarchy(interface):
       html_interface_name = self.RenameInterface(interface)
       member_name = html_interface_name + '.' + member
       if member_name in candidates:
         return member_name
       member_name = html_interface_name + '.' + member_prefix + member
       if member_name in candidates:
         return member_name