Clean up WheelEvent

tools/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."""
 
 import emitter
 import logging
@@ skipping 74 matching lines @@
     'Navigator.language',
     'Navigator.webkitGetUserMedia',
     'ScriptProcessorNode._setEventListener',
     'URL.createObjectURL',
     'URL.createObjectUrlFromSource',
     'URL.createObjectUrlFromStream',
     'URL.createObjectUrlFromBlob',
     'URL.revokeObjectURL',
     'URL.toString',
     'WheelEvent.deltaMode',
-    'WheelEvent.wheelDeltaX',
-    'WheelEvent.wheelDeltaY',
     'Window.cancelAnimationFrame',
     'Window.console',
     'Window.document',
     'Window.indexedDB',
     'Window.location',
     'Window.open',
     'Window.requestAnimationFrame',
     'Window.scrollX',
     'Window.scrollY'
     # 'WorkerContext.indexedDB', # Workers
@@ skipping 1181 matching lines @@
 
   def AddFile(self, basename, library_name, path):
     self._libraries[library_name].AddFile(path)
 
   def AddTypeEntry(self, library_name, idl_name, dart_name):
     self._libraries[library_name].AddTypeEntry(idl_name, dart_name)
 
   def Emit(self, emitter, auxiliary_dir):
     for lib in self._libraries.values():
       lib.Emit(emitter, auxiliary_dir)