Fix patch creation in merge-to-branch script.

tools/push-to-trunk/git_recipes.py

 #!/usr/bin/env python
 # Copyright 2014 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 54 matching lines @@
 
   @Strip
   def GitCurrentBranch(self):
     for line in self.Git("status -s -b -uno").strip().splitlines():
       match = re.match(r"^## (.+)", line)
       if match: return match.group(1)
     raise Exception("Couldn't find curent branch.")
 
   @Strip
   def GitLog(self, n=0, format="", grep="", git_hash="", parent_hash="",
-             branch="", reverse=False, patch=False):
+             branch="", reverse=False):
     assert not (git_hash and parent_hash)
     args = ["log"]
     if n > 0:
       args.append("-%d" % n)
     if format:
       args.append("--format=%s" % format)
     if grep:
       args.append("--grep=\"%s\"" % grep)
     if reverse:
       args.append("--reverse")
-    if patch:
-      args.append("-p")
     if git_hash:
       args.append(git_hash)
     if parent_hash:
       args.append("%s^" % parent_hash)
     args.append(branch)
     return self.Git(MakeArgs(args))
 
+  def GitGetPatch(self, git_hash):
+    assert git_hash
+    return self.Git(MakeArgs(["log", "-1", "-p", git_hash]))
+
   def GitAdd(self, name):
     assert name
     self.Git(MakeArgs(["add", Quoted(name)]))
 
   def GitApplyPatch(self, patch_file, reverse=False):
     assert patch_file
     args = ["apply --index --reject"]
     if reverse:
       args.append("--reverse")
     args.append(Quoted(patch_file))
@@ skipping 47 matching lines @@
   @Strip
   def GitSVNFindSVNRev(self, git_hash, branch=""):
     return self.Git(MakeArgs(["svn find-rev", git_hash, branch]))
 
   def GitSVNDCommit(self):
     return self.Git("svn dcommit 2>&1", retry_on=lambda x: x is None)
 
   def GitSVNTag(self, version):
     self.Git(("svn tag %s -m \"Tagging version %s\"" % (version, version)),
              retry_on=lambda x: x is None)