Make json5_generator.Writer always take a list of files.

third_party/WebKit/Source/build/scripts/make_css_property_apis.py

 #!/usr/bin/env python
 # Copyright 2016 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 sys
 
 import json5_generator
 import template_expander
 import make_style_builder
@@ skipping 22 matching lines @@
     return property['api_class']
 
 
 class CSSPropertyAPIWriter(StyleBuilderWriter):
     def __init__(self, json5_file_paths):
         super(CSSPropertyAPIWriter, self).__init__(json5_file_paths[0])
         # TODO(aazzam): Move the logic for loading CSSPropertyAPIMethods.json5 into a new class APIMethodsWriter().
         assert len(json5_file_paths) == 2,\
             'CSSPropertyAPIWriter requires 2 input json5 files files, got {}.'.format(len(json5_file_paths))
 
-        self.css_property_api_methods = Json5File.load_from_files([json5_file_paths[1]], {}, {})
+        self.css_property_api_methods = Json5File.load_from_files(json5_file_paths[1])
 
         self._outputs = {
             'CSSPropertyDescriptor.cpp': self.generate_property_descriptor_cpp,
             'CSSPropertyDescriptor.h': self.generate_property_descriptor_h,
             'CSSPropertyAPI.h': self.generate_property_api,
         }
 
         # Stores a map of API method name -> (return_type, parameters)
         self.all_api_methods = {}
         # Stores an ordered list of all API method names. This must match the
@@ skipping 75 matching lines @@
         def generate_property_api_h():
             return {
                 'api_classname': api_classname,
                 'methods_for_class': self.methods_for_classes[api_classname],
                 'all_api_methods': self.all_api_methods,
             }
         return generate_property_api_h
 
 if __name__ == '__main__':
     json5_generator.Maker(CSSPropertyAPIWriter).main()