Revert of Simplify the initialization of Git objects in Host.

third_party/WebKit/Tools/Scripts/webkitpy/style/main.py

 # Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
@@ skipping 107 matching lines @@
         #        the global sys.stderr.  This involves updating the code to
         #        accept a stream parameter where necessary, and not calling
         #        sys.stderr explicitly anywhere.
         sys.stderr = stderr
         return stderr
 
     def main(self):
         args = sys.argv[1:]
 
         host = Host()
+        host.initialize_scm()
 
         stderr = self._engage_awesome_stderr_hacks()
 
         # Checking for the verbose flag before calling check_webkit_style_parser()
         # lets us enable verbose logging earlier.
         is_verbose = "-v" in args or "--verbose" in args
 
         checker.configure_logging(stream=stderr, is_verbose=is_verbose)
         _log.debug("Verbose logging enabled.")
 
@@ skipping 15 matching lines @@
             patch_checker = PatchReader(file_reader)
             patch_checker.check(patch)
 
         error_count = style_processor.error_count
         file_count = file_reader.file_count
         delete_only_file_count = file_reader.delete_only_file_count
 
         _log.info("Total errors found: %d in %d files", error_count, file_count)
         # We fail when style errors are found or there are no checked files.
         return error_count > 0 or (file_count == 0 and delete_only_file_count == 0)