IDL: Generate union type containers

Source/bindings/scripts/interfaces_info_individual.gypi

 # Copyright 2014 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.
 #
 # This file is meant to be included into a target to provide an action
 # to compute information about individual interfaces defined in a component.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'interfaces_info_individual_component',
 #   'dependencies': [
 #     'generated_idls_target',
 #   ],
 #   'variables': {
 #     'static_idl_files': '<(component_static_idl_files)',
 #     'generated_idl_files': '<(component_generated_idl_files)',
 #     'output_file':
 #       '<(bindings_core_output_dir)/InterfacesInfoComponentIndividual.pickle',
 #   },
 #   'includes': ['path/to/this/gypi/file'],
 # },
 #
 # Required variables:
 #  static_idl_files - All static .idl files for the component, including
 #    dependencies and testing.
 #  generated_idl_files - All generated .idl files for the component.
 #    (Must be separate from static because build dir not know at gyp time.)
-#  output_file - Pickle file containing output.
+#  interfaces_info_file - Output pickle file containing interfaces info.
+#  component_info_file - Output pickle file containing component-wide info.
 #
 # Design document: http://www.chromium.org/developers/design-documents/idl-build
 
 {
   'type': 'none',
   'actions': [{
     'action_name': 'compute_<(_target_name)',
     'message': 'Computing global information about individual IDL files for <(_target_name)',
     'variables': {
       'static_idl_files_list':
         '<|(<(_target_name)_static_idl_files_list.tmp <@(static_idl_files))',
     },
     'inputs': [
       '<(bindings_scripts_dir)/compute_interfaces_info_individual.py',
       '<(bindings_scripts_dir)/utilities.py',
       '<(static_idl_files_list)',
       '<@(static_idl_files)',
       '<@(generated_idl_files)',
     ],
     'outputs': [
-      '<(output_file)',
+      '<(interfaces_info_file)',
+      '<(component_info_file)',
     ],
 
     'action': [
       'python',
       '<(bindings_scripts_dir)/compute_interfaces_info_individual.py',
       '--cache-directory',
       '<(cache_directory)',
       '--idl-files-list',
       '<(static_idl_files_list)',
       '--interfaces-info-file',
-      '<(output_file)',
+      '<(interfaces_info_file)',
+      '--component-info-file',
+      '<(component_info_file)',
       '--write-file-only-if-changed',
       '<(write_file_only_if_changed)',
       '--',
       # Generated files must be passed at command line
       '<@(generated_idl_files)',
     ],
   }],
 }