Factor abstract base class IDLCompiler, concrete class IDLComplierV8

Source/bindings/scripts/generate_event_interfaces.py

 #!/usr/bin/python
 #
 # 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.
@@ skipping 94 matching lines @@
 
         return '%s %s\n' % (relative_path_posix,
                             ', '.join(extended_attributes_list))
 
     lines = ['namespace="Event"\n',
              '\n']
     interface_lines = [interface_line(interface_name)
                        for interface_name in event_interfaces]
     interface_lines.sort()
     lines.extend(interface_lines)
-    write_file(lines, destination_filename, only_if_changed)
+    write_file(''.join(lines), destination_filename, only_if_changed)
 
 
 ################################################################################
 
 def main():
     options = parse_options()
     with open(options.interfaces_info_file) as interfaces_info_file:
         interfaces_info = pickle.load(interfaces_info_file)
     write_event_interfaces_file(interfaces_info,
                                 options.event_interfaces_file,
                                 options.write_file_only_if_changed)
 
 
 if __name__ == '__main__':
     sys.exit(main())