Fix chromium update in auto-roller.

tools/push-to-trunk/test_scripts.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 816 matching lines @@
     with open(googlers_mapping_py, "w") as f:
       f.write("""
 def list_to_dict(entries):
   return {"g_name@google.com": "c_name@chromium.org"}
 def get_list():
   pass""")
 
     TEST_CONFIG[DOT_GIT_LOCATION] = self.MakeEmptyTempFile()
     if not os.path.exists(TEST_CONFIG[CHROMIUM]):
       os.makedirs(TEST_CONFIG[CHROMIUM])
+    if not os.path.exists(os.path.join(TEST_CONFIG[CHROMIUM], "v8")):
+      os.makedirs(os.path.join(TEST_CONFIG[CHROMIUM], "v8"))
     TextToFile("Some line\n   \"v8_revision\": \"123444\",\n  some line",
                TEST_CONFIG[DEPS_FILE])
     def WriteDeps():
       TextToFile("Some line\n   \"v8_revision\": \"123455\",\n  some line",
                  TEST_CONFIG[DEPS_FILE])
 
     os.environ["EDITOR"] = "vi"
     force_flag = " -f" if not manual else ""
     self.ExpectGit([
       Git("status -s -uno", ""),
       Git("status -s -b -uno", "## some_branch\n"),
       Git("svn fetch", ""),
       Git(("log -1 --format=%H --grep="
            "\"^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*\" "
            "svn/trunk"), "push_hash\n"),
       Git("svn find-rev push_hash", "123455\n"),
       Git("log -1 --format=%s push_hash",
           "Version 3.22.5 (based on bleeding_edge revision r123454)\n"),
       Git("status -s -uno", ""),
       Git("checkout -f master", ""),
       Git("sync --nohooks", "syncing..."),
+      Git("fetch origin", ""),
       Git("checkout -b v8-roll-123455", ""),
       Git("v8 123455", "rolled", cb=WriteDeps),
       Git(("commit -am \"Update V8 to version 3.22.5 "
            "(based on bleeding_edge revision r123454).\n\n"
            "Please reply to the V8 sheriff c_name@chromium.org in "
            "case of problems.\n\nTBR=c_name@chromium.org\""),
           ""),
       Git(("cl upload --send-mail --email \"author@chromium.org\"%s"
            % force_flag), ""),
     ])
@@ skipping 656 matching lines @@
 
 Review URL: https://codereview.chromium.org/83173002
 
 ------------------------------------------------------------------------""")
     self.assertEquals(
 """Prepare push to trunk.  Now working on version 3.23.11.
 
 R=danno@chromium.org
 
 Committed: https://code.google.com/p/v8/source/detail?r=17997""", body)