Make auto-roll script also roll patched trunk revisions.

tools/push-to-trunk/chromium_roll.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 os
 import sys
 
 from common_includes import *
@@ skipping 12 matching lines @@
   MESSAGE = "Preparation."
 
   def RunStep(self):
     self.CommonPrepare()
 
 
 class DetectLastPush(Step):
   MESSAGE = "Detect commit ID of last push to trunk."
 
   def RunStep(self):
-    self["last_push"] = self._options.last_push or self.FindLastTrunkPush()
+    self["last_push"] = self._options.last_push or self.FindLastTrunkPush(
+        include_patches=True)
     self["trunk_revision"] = self.GitSVNFindSVNRev(self["last_push"])
     self["push_title"] = self.GitLog(n=1, format="%s",
                                      git_hash=self["last_push"])
 
 
 class CheckChromium(Step):
   MESSAGE = "Ask for chromium checkout."
 
   def Run(self):
     self["chrome_path"] = self._options.chromium
@@ skipping 117 matching lines @@
       SwitchChromium,
       UpdateChromiumCheckout,
       UploadCL,
       SwitchV8,
       CleanUp,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(ChromiumRoll(CONFIG).Run())