Cast: cast.streaming API to support null audio (or video) track

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 152 matching lines @@
   to see.
   '''
   def __init__(self, member_node):
     self.node = member_node
 
   def process(self, callbacks):
     properties = OrderedDict()
     name = self.node.GetName()
     if self.node.GetProperty('deprecated'):
       properties['deprecated'] = self.node.GetProperty('deprecated')
+    if self.node.GetProperty('allowAmbiguousOptionalArguments'):
+      properties['allowAmbiguousOptionalArguments'] = True
     for property_name in ('OPTIONAL', 'nodoc', 'nocompile', 'nodart'):
       if self.node.GetProperty(property_name):
         properties[property_name.lower()] = True
     for option_name, sanitizer in [
         ('maxListeners', int),
         ('supportsFilters', lambda s: s == 'true'),
         ('supportsListeners', lambda s: s == 'true'),
         ('supportsRules', lambda s: s == 'true')]:
       if self.node.GetProperty(option_name):
         if 'options' not in properties:
@@ skipping 292 matching lines @@
       print json.dumps(schema, indent=2)
   else:
     contents = sys.stdin.read()
     idl = idl_parser.IDLParser().ParseData(contents, '<stdin>')
     schema = IDLSchema(idl).process()
     print json.dumps(schema, indent=2)
 
 
 if __name__ == '__main__':
   Main()