Pepper: Clean up IDLNode internals.

tools/json_schema_compiler/idl_schema.py

 #! /usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import itertools
 import json
 import os.path
 import re
 import sys
@@ skipping 205 matching lines @@
   '''
   def __init__(self, typeref, parent, additional_properties=OrderedDict()):
     self.typeref = typeref
     self.parent = parent
     self.additional_properties = additional_properties
 
   def process(self, callbacks):
     properties = self.additional_properties
     result = properties
 
-    if self.parent.GetProperty('OPTIONAL', False):
+    if self.parent.GetProperty('OPTIONAL'):
       properties['optional'] = True
 
     # The IDL parser denotes array types by adding a child 'Array' node onto
     # the Param node in the Callspec.
     for sibling in self.parent.GetChildren():
       if sibling.cls == 'Array' and sibling.GetName() == self.parent.GetName():
         properties['type'] = 'array'
         properties['items'] = OrderedDict()
         properties = properties['items']
         break
@@ skipping 209 matching lines @@
   Dump a json serialization of parse result for the IDL files whose names
   were passed in on the command line.
   '''
   for filename in sys.argv[1:]:
     schema = Load(filename)
     print json.dumps(schema, indent=2)
 
 
 if __name__ == '__main__':
   Main()