Teach push script to commit with roll account.

tools/push-to-trunk/auto_push.py

 #!/usr/bin/env python
 # Copyright 2013 the V8 project authors. 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.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 87 matching lines @@
       print "Already pushed current lkgr %s" % last_push_be
       return True
 
 
 class PushToCandidates(Step):
   MESSAGE = "Pushing to candidates if specified."
 
   def RunStep(self):
     print "Pushing lkgr %s to candidates." % self["lkgr"]
 
+    args = [
+      "--author", self._options.author,
+      "--reviewer", self._options.reviewer,
+      "--revision", self["lkgr"],
+      "--force",
+    ]
+
+    if self._options.svn:
+      args.extend(["--svn", self._options.svn])
+    if self._options.svn_config:
+      args.extend(["--svn-config", self._options.svn_config])
+    if self._options.vc_interface:
+      args.extend(["--vc-interface", self._options.vc_interface])
+
     # TODO(machenbach): Update the script before calling it.
     if self._options.push:
       self._side_effect_handler.Call(
           push_to_trunk.PushToTrunk().Run,
           ["--author", self._options.author,
            "--reviewer", self._options.reviewer,
            "--revision", self["lkgr"],
            "--force"])
 
 
@@ skipping 22 matching lines @@
       CheckAutoPushSettings,
       CheckTreeStatus,
       FetchLKGR,
       CheckLastPush,
       PushToCandidates,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(AutoPush().Run())