Adding conversion support for JSON XHR requests.

tools/dom/scripts/generator.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 systems to generate
 Dart APIs from the IDL database."""
 
 import copy
 import json
@@ skipping 570 matching lines @@
     # something that does not need conversion.
     'IDBAny get IDBRequest.result':
       Conversion('_convertNativeToDart_IDBAny', 'dynamic', 'dynamic'),
 
     # "source: On getting, returns the IDBObjectStore or IDBIndex that the
     # cursor is iterating. ...".  So we should not try to convert it.
     'IDBAny get IDBCursor.source': None,
 
     # Should be either a DOMString, an Array of DOMStrings or null.
     'IDBAny get IDBObjectStore.keyPath': None,
+
+    '* get XMLHttpRequest.response':
+      Conversion('_convertNativeToDart_XHR_Response',
+                 'dynamic', 'dynamic'),
 }, dart2jsOnly=True)
 
 def FindConversion(idl_type, direction, interface, member):
   table = dart2js_conversions
   return (table.get('%s %s %s.%s' % (idl_type, direction, interface, member)) or
           table.get('* %s %s.%s' % (direction, interface, member)) or
           table.get('%s %s %s.*' % (idl_type, direction, interface)) or
           table.get('%s %s' % (idl_type, direction)))
   return None
 
@@ skipping 594 matching lines @@
     if type_data.clazz == 'BasicTypedList':
       if type_name == 'ArrayBuffer':
         dart_interface_name = 'ByteBuffer'
       else:
         dart_interface_name = self._renamer.RenameInterfaceId(type_name)
       return BasicTypedListIDLTypeInfo(
           type_name, type_data, dart_interface_name, self)
 
     class_name = '%sIDLTypeInfo' % type_data.clazz
     return globals()[class_name](type_name, type_data)