update obsolete code.google.com documentation links

tools/clang/scripts/run_tool.py

 #!/usr/bin/env python
 # Copyright (c) 2013 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.
 """Wrapper script to help run clang tools across Chromium code.
 
 How to use this tool:
 If you want to run the tool across all Chromium code:
 run_tool.py <tool> <path/to/compiledb>
 
 If you want to include all files mentioned in the compilation database:
 run_tool.py <tool> <path/to/compiledb> --all
 
 If you only want to run the tool across just chrome/browser and content/browser:
 run_tool.py <tool> <path/to/compiledb> chrome/browser content/browser
 
-Please see https://code.google.com/p/chromium/wiki/ClangToolRefactoring for more
+Please see https://chromium.googlesource.com/chromium/src/+/master/docs/clang_tool_refactoring.md for more
 information, which documents the entire automated refactoring flow in Chromium.
 
 Why use this tool:
 The clang tool implementation doesn't take advantage of multiple cores, and if
 it fails mysteriously in the middle, all the generated replacements will be
 lost.
 
 Unfortunately, if the work is simply sharded across multiple cores by running
 multiple RefactoringTools, problems arise when they attempt to rewrite a file at
 the same time. To work around that, clang tools that are run using this tool
@@ skipping 308 matching lines @@
   # useful to modify files that aren't under source control--typically, these
   # are generated files or files in a git submodule that's not part of Chromium.
   _ApplyEdits({k: v
                for k, v in dispatcher.edits.iteritems()
                if os.path.realpath(k) in filenames})
   return -dispatcher.failed_count
 
 
 if __name__ == '__main__':
   sys.exit(main())