Let revision script add commit dates.

tools/push-to-trunk/releases.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.
 
 # This script retrieves the history of all V8 branches and trunk revisions and
 # their corresponding Chromium revisions.
 
 import argparse
 import csv
@@ skipping 150 matching lines @@
     revision = self.GitSVNFindSVNRev(git_hash)
     return {
       # The SVN revision on the branch.
       "revision": revision,
       # The SVN revision on bleeding edge (only for newer trunk pushes).
       "bleeding_edge": self.GetBleedingEdgeFromPush(title),
       # The branch name.
       "branch": branch,
       # The version for displaying in the form 3.26.3 or 3.26.3.12.
       "version": version,
+      # The date of the commit.
+      "date": self.GitLog(n=1, format="%ci", git_hash=git_hash),
       # Merged patches if available in the form 'r1234, r2345'.
       "patches_merged": patches,
       # Default for easier output formatting.
       "chromium_revision": "",
       # Link to the CL on code review. Trunk pushes are not uploaded, so this
       # field will be populated below with the recent roll CL link.
       "review_link": MatchSafe(REVIEW_LINK_RE.search(body)),
       # Link to the commit message on google code.
       "revision_link": ("https://code.google.com/p/v8/source/detail?r=%s"
                         % revision),
@@ skipping 206 matching lines @@
       UpdateChromiumCheckout,
       RetrieveChromiumV8Releases,
       SwitchV8,
       CleanUp,
       WriteOutput,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(Releases(CONFIG).Run())