Switch release scripts to pure git.

tools/push-to-trunk/bump_up_version.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.
 
 """
 Script for auto-increasing the version on bleeding_edge.
 
 The script can be run regularly by a cron job. It will increase the build
 level of the version on bleeding_edge if:
@@ skipping 180 matching lines @@
 
   def RunStep(self):
     self.GitCreateBranch(VERSION_BRANCH, "master")
 
     self.SetVersion(os.path.join(self.default_cwd, VERSION_FILE), "new_")
 
     try:
       msg = "[Auto-roll] Bump up version to %s" % self["new_version"]
       self.GitCommit("%s\n\nTBR=%s" % (msg, self._options.author),
                      author=self._options.author)
-      if self._options.svn:
-        self.SVNCommit("branches/bleeding_edge", msg)
-      else:
-        self.GitUpload(author=self._options.author,
-                       force=self._options.force_upload,
-                       bypass_hooks=True)
-        self.GitDCommit()
+      self.GitUpload(author=self._options.author,
+                     force=self._options.force_upload,
+                     bypass_hooks=True)
+      self.GitCLLand()
       print "Successfully changed the version."
     finally:
       # Clean up.
       self.GitCheckout("master")
       self.DeleteBranch(VERSION_BRANCH)
 
 
 class BumpUpVersion(ScriptsBase):
   def _PrepareOptions(self, parser):
     parser.add_argument("--dry_run", help="Don't commit the new version.",
@@ skipping 23 matching lines @@
       GetLKGRVersion,
       LKGRVersionUpToDateBailout,
       GetTrunkVersion,
       CalculateVersion,
       CheckTreeStatus,
       ChangeVersion,
     ]
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(BumpUpVersion().Run())