Fix for FileReader.readAsArrayBuffer http://dartbug.com/17058

tools/dom/scripts/dartmetadata.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 to provide Dart metadata for
 DOM APIs.
 """
 
 import copy
@@ skipping 91 matching lines @@
     # Only nodes in the DOM bubble and have target !== currentTarget.
     'Event.target': [
       "@Creates('Node')",
       "@Returns('EventTarget|=Object')",
     ],
 
     'File.lastModifiedDate': [
       "@Creates('Null')", # JS date object.
     ],
 
-    'FileReader.result': ["@Creates('String|NativeByteBuffer|Null')"],
-
     'FocusEvent.relatedTarget': [
       "@Creates('Null')",
     ],
 
     'HTMLInputElement.valueAsDate': [
       "@Creates('Null')", # JS date object.
     ],
 
     # Rather than have the result of an IDBRequest as a union over all possible
     # results, we mark the result as instantiating any classes, and mark
@@ skipping 667 matching lines @@
       pass
     else:
       _logger.warn('Unknown support_level - %s:%s' % (interface_id, member_id))
 
     return annotations
 
   def Flush(self):
     json_file = open(self._api_status_path, 'w+')
     json.dump(self._types, json_file, indent=2, separators=(',', ': '), sort_keys=True)
     json_file.close()