Removed HttpRequestProgressEvent

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 402 matching lines @@
     'SpeechRecognition': "JS('bool', '!!(window.SpeechRecognition || "
         "window.webkitSpeechRecognition)')",
     'SVGExternalResourcesRequired': ('supported(SvgElement element)',
         "JS('bool', '#.externalResourcesRequired !== undefined && "
         "#.externalResourcesRequired.animVal !== undefined', "
         "element, element)"),
     'SVGLangSpace': ('supported(SvgElement element)',
         "JS('bool', '#.xmlspace !== undefined && #.xmllang !== undefined', "
         "element, element)"),
     'TouchList': "JS('bool', '!!document.createTouchList')",
-    'XMLHttpRequestProgressEvent':
-        "Device.isEventTypeSupported('XMLHttpRequestProgressEvent')",
     'WebGLRenderingContext': "JS('bool', '!!(window.WebGLRenderingContext)')",
     'WebKitPoint': "JS('bool', '!!(window.WebKitPoint)')",
     'WebSocket': "JS('bool', 'typeof window.WebSocket != \"undefined\"')",
     'Worker': "JS('bool', '(typeof window.Worker != \"undefined\")')",
     'XSLTProcessor': "JS('bool', '!!(window.XSLTProcessor)')",
   }.items() +
   dict((key,
         SvgSupportStr(_svg_element_constructors[key]) if key.startswith('SVG')
             else ElemSupportStr(_html_element_constructors[key])) for key in
     _js_support_checks_basic_element_with_constructors +
@@ skipping 792 matching lines @@
     for library_name in libraries:
       self._libraries[library_name] = DartLibrary(
           library_name, template_loader, library_type, output_dir)
 
   def AddFile(self, basename, library_name, path):
     self._libraries[library_name].AddFile(path)
 
   def Emit(self, emitter, auxiliary_dir):
     for lib in self._libraries.values():
       lib.Emit(emitter, auxiliary_dir)