Make HtmlFrogSystem and NativeImplementationSystem the backends for HtmlInterfacesSystem and remove…

lib/dom/scripts/dartgenerator.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 generates Dart APIs from the IDL database."""
 
 import emitter
 import idlnode
 import logging
@@ skipping 291 matching lines @@
 
   def ProcessCallback(self, interface, info):
     pass
 
   def GenerateLibraries(self):
     # Library generated for implementation.
     self._GenerateLibFile(
         'dom_dummy.darttemplate',
         os.path.join(self._output_dir, 'dom_dummy.dart'),
         (self._interface_system._dart_interface_file_paths +
-         self._interface_system._dart_callback_file_paths +
          self._impl_file_paths))
 
 
 # ------------------------------------------------------------------------------
 
 class DummyInterfaceGenerator(systembase.BaseGenerator):
   """Generates dummy implementation."""
 
   def __init__(self, system, interface):
     super(DummyInterfaceGenerator, self).__init__(system._database, interface)
@@ skipping 16 matching lines @@
         PARAMETERS=constructor_info.ParametersImplementationDeclaration())
 
   def FinishInterface(self):
     pass
 
   def AddTypedArrayConstructors(self, element_type):
     pass
 
   def AddEventAttributes(self, event_attrs):
     pass