Add constants and primitive type readonly attributes to Python IDL compiler

Source/bindings/derived_sources.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 38 matching lines @@
     ],
     'perl_and_python_idl_files': [
         '<@(deprecated_perl_idl_files)',
         '<@(python_idl_files)',
     ],
     'webcore_test_support_idl_files': [
         '<@(deprecated_perl_webcore_test_support_idl_files)',
         '<@(python_webcore_test_support_idl_files)',
     ],
     'code_generator_template_files': [
+        'templates/attributes.cpp',
         'templates/callback_interface.cpp',
         'templates/callback_interface.h',
+        'templates/constants.cpp',
         'templates/interface.cpp',
         'templates/interface.h',
     ],
 
     'bindings_output_dir': '<(SHARED_INTERMEDIATE_DIR)/blink/bindings',
     'generated_global_constructors_idl_files': [
          '<(SHARED_INTERMEDIATE_DIR)/blink/WindowConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/blink/WorkerGlobalScopeConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/blink/SharedWorkerGlobalScopeConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/blink/DedicatedWorkerGlobalScopeConstructors.idl',
@@ skipping 279 matching lines @@
           '../core/scripts/action_derivedsourcesallinone.py',
           '<(SHARED_INTERMEDIATE_DIR)/blink/InterfaceDependencies.txt',
           '--',
           '<@(derived_sources_aggregate_files)',
         ],
         'message': 'Generating bindings derived sources',
       }],
     },
   ],
 }