Refactoring: Remove global configs in release scripts.

tools/push-to-trunk/auto_tag.py

 #!/usr/bin/env python
 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import argparse
 import sys
 
 from common_includes import *
 
-CONFIG = {
-  BRANCHNAME: "auto-tag-v8",
-  PERSISTFILE_BASENAME: "/tmp/v8-auto-tag-tempfile",
-}
-
 
 class Preparation(Step):
   MESSAGE = "Preparation."
 
   def RunStep(self):
     self.CommonPrepare()
     self.PrepareBranch()
     self.GitCheckout("master")
     self.GitSVNRebase()
 
 
 class GetTags(Step):
   MESSAGE = "Get all V8 tags."
 
   def RunStep(self):
-    self.GitCreateBranch(self._config[BRANCHNAME])
+    self.GitCreateBranch(self._config["BRANCHNAME"])
 
     # Get remote tags.
     tags = filter(lambda s: re.match(r"^svn/tags/[\d+\.]+$", s),
                   self.GitRemotes())
 
     # Remove 'svn/tags/' prefix.
     self["tags"] = map(lambda s: s[9:], tags)
 
 
 class GetOldestUntaggedVersion(Step):
@@ skipping 133 matching lines @@
 
   def _ProcessOptions(self, options):  # pragma: no cover
     if not options.dry_run and not options.author:
       print "Specify your chromium.org email with -a"
       return False
     options.wait_for_lgtm = False
     options.force_readline_defaults = True
     options.force_upload = True
     return True
 
+  def _Config(self):
+    return {
+      "BRANCHNAME": "auto-tag-v8",
+      "PERSISTFILE_BASENAME": "/tmp/v8-auto-tag-tempfile",
+    }
+
   def _Steps(self):
     return [
       Preparation,
       GetTags,
       GetOldestUntaggedVersion,
       GetLKGRs,
       CalculateTagRevision,
       MakeTag,
       CleanUp,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
-  sys.exit(AutoTag(CONFIG).Run())
+  sys.exit(AutoTag().Run())