[Bindings] Remove a redundant option write-file-if-only-changed in bindings

third_party/WebKit/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 41 matching lines @@
     'RuntimeEnabled',
 )
 module_path = os.path.dirname(os.path.realpath(__file__))
 source_dir = os.path.normpath(os.path.join(module_path, os.pardir, os.pardir))
 
 
 def parse_options():
     parser = OptionParser()
     parser.add_option('--event-idl-files-list', help='file listing event IDL files')
     parser.add_option('--event-interfaces-file', help='output file')
-    parser.add_option('--write-file-only-if-changed', type='int', help='if true, do not write an output file if it would be identical to the existing one, which avoids unnecessary rebuilds in ninja')
     parser.add_option('--suffix', help='specify a suffix to the namespace, i.e., "Modules". Default is None.')
 
     options, args = parser.parse_args()
     if options.event_idl_files_list is None:
         parser.error('Must specify a file listing event IDL files using --event-idl-files-list.')
     if options.event_interfaces_file is None:
         parser.error('Must specify an output file using --event-interfaces-file.')
-    if options.write_file_only_if_changed is None:
-        parser.error('Must specify whether file is only written if changed using --write-file-only-if-changed.')
-    options.write_file_only_if_changed = bool(options.write_file_only_if_changed)
     if args:
         parser.error('No arguments allowed, but %d given.' % len(args))
     return options
 
 
-def write_event_interfaces_file(event_idl_files, destination_filename, only_if_changed, suffix):
+def write_event_interfaces_file(event_idl_files, destination_filename, suffix):
     def extended_attribute_string(name, value):
         if name == 'RuntimeEnabled':
             value += 'Enabled'
         return name + '=' + value
 
     def interface_line(full_path):
         relative_path_local, _ = os.path.splitext(os.path.relpath(full_path, source_dir))
         relative_path_posix = relative_path_local.replace(os.sep, posixpath.sep)
 
         idl_file_contents = get_file_contents(full_path)
@@ skipping 10 matching lines @@
     if suffix:
         lines.append('suffix="' + suffix + '"\n')
         lines.append('export=%s_EXPORT\n' % suffix.upper())
     else:
         lines.append('export=CORE_EXPORT\n')
     lines.append('\n')
     interface_lines = [interface_line(event_idl_file)
                        for event_idl_file in event_idl_files]
     interface_lines.sort()
     lines.extend(interface_lines)
-    write_file(''.join(lines), destination_filename, only_if_changed)
+    write_file(''.join(lines), destination_filename)
 
 
 ################################################################################
 
 def main():
     options = parse_options()
     event_idl_files = read_file_to_list(options.event_idl_files_list)
     write_event_interfaces_file(event_idl_files,
                                 options.event_interfaces_file,
-                                options.write_file_only_if_changed,
                                 options.suffix)
 
 
 if __name__ == '__main__':
     sys.exit(main())