Revert "Revert "Converting dart:html to use DateTime rather than Date.""

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 monitored
@@ skipping 802 matching lines @@
         '\n  void set $HTML_NAME($TYPE value) {'
         '\n    JS("void", "#.$NAME = #", this, value);'
         '\n  }'
         '\n',
         HTML_NAME=html_name,
         NAME=attr.id,
         TYPE=self._NarrowInputType(attr.type.id))
 
   def _AddConvertingGetter(self, attr, html_name, conversion):
     self._members_emitter.Emit(
-        '\n  $RETURN_TYPE get $HTML_NAME => $CONVERT(this._$(HTML_NAME));'
+        '\n  $RETURN_TYPE get $HTML_NAME => $CONVERT(this._get_$(HTML_NAME));'
         "\n  @JSName('$NAME')"
-        '\n  $(ANNOTATIONS)final $NATIVE_TYPE _$HTML_NAME;'
+        '\n  $(ANNOTATIONS)final $NATIVE_TYPE _get_$HTML_NAME;'
         '\n',
         ANNOTATIONS=self._Annotations(attr.type.id, html_name),
         CONVERT=conversion.function_name,
         HTML_NAME=html_name,
         NAME=attr.id,
         RETURN_TYPE=conversion.output_type,
         NATIVE_TYPE=conversion.input_type)
 
   def _AddConvertingSetter(self, attr, html_name, conversion):
     self._members_emitter.Emit(
         # TODO(sra): Use metadata to provide native name.
         '\n  void set $HTML_NAME($INPUT_TYPE value) {'
-        '\n    this._$HTML_NAME = $CONVERT(value);'
+        '\n    this._set_$HTML_NAME = $CONVERT(value);'
         '\n  }'
-        '\n  void set _$HTML_NAME(/*$NATIVE_TYPE*/ value) {'
+        '\n  void set _set_$HTML_NAME(/*$NATIVE_TYPE*/ value) {'
         '\n    JS("void", "#.$NAME = #", this, value);'
         '\n  }'
         '\n',
         CONVERT=conversion.function_name,
         HTML_NAME=html_name,
         NAME=attr.id,
         INPUT_TYPE=conversion.input_type,
         NATIVE_TYPE=conversion.output_type)
 
   def AmendIndexer(self, element_type):
@@ skipping 284 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)