Add documentation for HttpRequest.

sdk/lib/html/scripts/htmldartgenerator.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."""
 
 from generator import AnalyzeOperation, ConstantOutputOrder, \
     DartDomNameOfAttribute, FindMatchingAttribute, IsDartCollectionType, \
@@ skipping 205 matching lines @@
           '\n'
           '  factory $CTOR.fromBuffer(ArrayBuffer buffer, '
               '[int byteOffset, int length]) => \n'
           '    $FACTORY.create$(CTOR)_fromBuffer(buffer, byteOffset, length);\n',
         CTOR=self._interface.id,
         TYPE=self._DartType(typed_array_type),
         FACTORY=factory_name)
 
   def _AddConstructor(self, constructor_info, factory_name,
       factory_constructor_name, factory_constructor_params):
+    self._members_emitter.Emit('\n  ///@docsEditable true');
     constructor_info.GenerateFactoryInvocation(
         self._DartType, self._members_emitter, factory_name,
         factory_constructor_name=factory_constructor_name,
         factory_parameters=factory_constructor_params)
 
   def DeclareAttribute(self, attribute, type_name, attr_name, read_only):
     """ Declares an attribute but does not include the code to invoke it.
     """
     self.EmitAttributeDocumentation(attribute)
     if read_only:
@@ skipping 92 matching lines @@
         walk(interface.parents)
       else:
         walk(interface.parents[1:])
     return result
 
   def _DartType(self, type_name):
     return self._type_registry.DartType(type_name)
 
   def _IsPrivate(self, name):
     return name.startswith('_')