Update idlsync.py to pull in dependencies required for chrome api generation.

third_party/chrome/tools/json_parse.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 json
-import logging
-import os
-import sys
-
-_FILE_PATH = os.path.dirname(os.path.realpath(__file__))
-_SYS_PATH = sys.path[:]
-try:
-  _COMMENT_EATER_PATH = os.path.join(_FILE_PATH, os.pardir)
-  sys.path.insert(0, _COMMENT_EATER_PATH)
-  import json_comment_eater
-finally:
-  sys.path = _SYS_PATH
-
-try:
-  from collections import OrderedDict
-
-  # Successfully imported, so we're running Python >= 2.7, and json.loads
-  # supports object_pairs_hook.
-  def Parse(json_str):
-    return json.loads(json_comment_eater.Nom(json_str),
-                      object_pairs_hook=OrderedDict)
-
-except ImportError:
-  # Failed to import, so we're running Python < 2.7, and json.loads doesn't
-  # support object_pairs_hook. simplejson however does, but it's slow.
-  #
-  # TODO(cduvall/kalman): Refuse to start the docs server in this case, but
-  # let json-schema-compiler do its thing.
-  #logging.warning('Using simplejson to parse, this might be slow! Upgrade to '
-  #                'Python 2.7.')
-
-  _SYS_PATH = sys.path[:]
-  try:
-    _SIMPLE_JSON_PATH = os.path.join(_FILE_PATH,
-                                     os.pardir,
-                                     os.pardir,
-                                     'third_party')
-    sys.path.insert(0, _SIMPLE_JSON_PATH)
-    # Add this path in case this is being used in the docs server.
-    sys.path.insert(0, os.path.join(_FILE_PATH,
-                                    os.pardir,
-                                    os.pardir,
-                                    'third_party',
-                                    'json_schema_compiler'))
-    import simplejson
-    from simplejson import OrderedDict
-  finally:
-    sys.path = _SYS_PATH
-
-  def Parse(json_str):
-    return simplejson.loads(json_comment_eater.Nom(json_str),
-                            object_pairs_hook=OrderedDict)
-
-def IsDict(item):
-  return isinstance(item, (dict, OrderedDict))