Improve handling of ArrayBuffers in composite objects.

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 json
 import os.path
 import re
 import sys
 
@@ skipping 172 matching lines @@
     if self.typeref == 'DOMString':
       properties['type'] = 'string'
     elif self.typeref == 'boolean':
       properties['type'] = 'boolean'
     elif self.typeref == 'double':
       properties['type'] = 'number'
     elif self.typeref == 'long':
       properties['type'] = 'integer'
     elif self.typeref == 'any':
       properties['type'] = 'any'
-    elif self.typeref == 'ArrayBuffer' or self.typeref == 'object':
+    elif self.typeref == 'object':
       properties['type'] = 'object'
       if 'additionalProperties' not in properties:
         properties['additionalProperties'] = {}
       properties['additionalProperties']['type'] = 'any'
       instance_of = self.parent.GetProperty('instanceOf')
-      if self.typeref == 'ArrayBuffer':
-        properties['isInstanceOf'] = 'ArrayBuffer'
-      elif instance_of:
+      if instance_of:
         properties['isInstanceOf'] = instance_of
+    elif self.typeref == 'ArrayBuffer':
+      properties['type'] = 'binary'
+      properties['isInstanceOf'] = 'ArrayBuffer'
     elif self.typeref is None:
       properties['type'] = 'function'
     else:
       if self.typeref in callbacks:
         properties.update(callbacks[self.typeref])
       else:
         properties['$ref'] = self.typeref
 
     return result
 
@@ skipping 91 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()