Fix for $dom_$dom_svgClassName

lib/dom/scripts/systemhtml.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.
 
 """This module provides shared functionality for the system to generate
 Dart:html APIs from the IDL database."""
 
 from systemfrog import *
 from systeminterface import *
@@ skipping 478 matching lines @@
     for interface_name in self._AllAncestorInterfaces(interface):
       name = interface_name + '.' + member
       if name in _html_library_renames:
         target_name = _html_library_renames[name]
       name = interface.id + '.' + member_prefix + member
       if name in _html_library_renames:
         target_name = _html_library_renames[name]
 
     if not target_name.startswith('_'):
       if self._PrivateInHtmlLibrary(interface, member, member_prefix):
-        target_name = '$dom_' + target_name
+        if not target_name.startswith('$dom_'):  # e.g. $dom_svgClassName
+          target_name = '$dom_' + target_name
       elif implementation_class and self._ManuallyGeneratedInHtmlLibrary(
           interface, member, member_prefix):
         target_name = '_' + target_name
 
     # No rename required
     return target_name
 
   def _PrivateInHtmlLibrary(self, interface, member, member_prefix):
     return self._Matches(interface, member, member_prefix,
         _private_html_members)
@@ skipping 1186 matching lines @@
     # dispatch has removed f(X), leaving only f(Y), but there is no guarantee
     # that Y = Z-X, so we need to check for Y.
     true_code = emitter.Emit(
         '$(INDENT)if ($COND) {\n'
         '$!TRUE'
         '$(INDENT)}\n',
         COND=test, INDENT=indent)
     self.GenerateDispatch(
         true_code, info, indent + '  ', position + 1, positive)
     return True