Fix dart:html generated directory structure and unify file names between backends.

lib/html/scripts/systembase.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 base functionality for systems to generate
 Dart APIs from the IDL database."""
 
 import os
 from generator import *
@@ skipping 31 matching lines @@
 
   def GenerateLibraries(self, lib_dir):
     pass
 
   def Finish(self):
     pass
 
 
   # Helper methods used by several systems.
 
-  def _ProcessCallback(self, interface, info, file_path):
-    """Generates a typedef for the callback interface."""
-    self._dart_interface_file_paths.append(file_path)
-    code = self._emitters.FileEmitter(file_path)
-
-    code.Emit(self._templates.Load('callback.darttemplate'))
-    code.Emit('typedef $TYPE $NAME($PARAMS);\n',
-              NAME=interface.id,
-              TYPE=DartType(info.type_name),
-              PARAMS=info.ParametersImplementationDeclaration(DartType))
-
-
   def _GenerateLibFile(self, lib_template, lib_file_path, file_paths,
                        **template_args):
     """Generates a lib file from a template and a list of files.
 
     Additional keyword arguments are passed to the template.
     Typically called from self.GenerateLibraries.
     """
     # Load template.
     template = self._templates.Load(lib_template)
     # Generate the .lib file.
@@ skipping 159 matching lines @@
     self.templates = templates
     self.database = database
     self.emitters = emitters
     self.type_registry = type_registry
     self.renamer = renamer
     self.output_dir = output_dir
 
 
 def IsReadOnly(attribute):
   return attribute.is_read_only or 'Replaceable' in attribute.ext_attrs