Add IDL capability to json_schema_compiler.

tools/json_schema_compiler/model.py

 # 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 os.path
 import re
 import copy
 
 class Model(object):
   """Model of all namespaces that comprise an API.
@@ skipping 72 matching lines @@
     self.from_client = True
     self.properties = {}
     self.functions = {}
     self.parent = parent
     for function_json in json.get('functions', []):
       if not function_json.get('nocompile', False):
         self.functions[function_json['name']] = Function(self, function_json)
     props = []
     for prop_name, prop_json in json.get('properties', {}).items():
       # TODO(calamity): support functions (callbacks) as properties.  The model
-      # doesn't support it yet because to h/cc generators don't -- this is
+      # doesn't support it yet because the h/cc generators don't -- this is
       # because we'd need to hook it into a base::Callback or something.
       #
       # However, pragmatically it's not necessary to support them anyway, since
       # the instances of functions-on-properties in the extension APIs are all
       # handled in pure Javascript on the render process (and .: never reach
       # C++ let alone the browser).
       if prop_json.get('type') == 'function':
         continue
       props.append(Property(self, prop_name, prop_json,
           from_json=True,
@@ skipping 217 matching lines @@
   """Returns the hierarchy of the given model entity."""
   hierarchy = []
   while entity:
     try:
       hierarchy.append(entity.name)
     except AttributeError:
       hierarchy.append(repr(entity))
     entity = entity.parent
   hierarchy.reverse()
   return hierarchy
-