Nuke custom factory providers.

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 os
@@ skipping 479 matching lines @@
   def FinishInterface(self):
     pass
 
   def HasSupportCheck(self):
     return self._interface.doc_js_name in js_support_checks
 
   def GetSupportCheck(self):
     return js_support_checks.get(self._interface.doc_js_name)
 
   def EmitStaticFactory(self, constructor_info):
+    WITH_CUSTOM_STATIC_FACTORY = [
+        'AudioContext',
+        'Blob',
+        'MutationObserver',
+    ]
+
+    if self._interface.doc_js_name in WITH_CUSTOM_STATIC_FACTORY:
+      return
+
     has_optional = any(param_info.is_optional
         for param_info in constructor_info.param_infos)
 
     def FormatJS(index):
       arguments = constructor_info.ParametersAsArgumentList(index)
       if arguments:
         arguments = ', ' + arguments
       return "JS('%s', 'new %s(%s)'%s)" % (
           self._interface_type_info.interface_name(),
           constructor_info.name or self._interface.doc_js_name,
@@ skipping 536 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)